Exhibit 10.63

Execution Version

FIRST AMENDMENT TO CREDIT AGREEMENT

THIS FIRST AMENDMENT TO CREDIT AGREEMENT dated as of September 15, 2008 (this
“Amendment”), is among Cheniere Common Units Holding, LLC, a Delaware limited
liability company (the “Borrower”), the other Loan Parties (as defined in the
Credit Agreement referred to below), the several banks and other financial
institutions signatories hereto (the “Lenders”) and The Bank of New York Mellon,
as Administrative Agent for the Lenders (in such capacity, the “Administrative
Agent”).

RECITALS

WHEREAS, the Borrower, the other Loan Parties, the Lenders and the
Administrative Agent are parties to a Credit Agreement dated as of August 15,
2008 (as amended, modified or supplemented from time to time, the “Credit
Agreement”).

WHEREAS, the Borrower has requested that Section 5.18(a) of the Credit Agreement
be amended as set forth herein to modify the time period within which CEI is
required to increase the number of members of its board of directors.

NOW, THEREFORE, in consideration of the foregoing and the mutual agreements set
forth in this Amendment, the Borrower, the other Loan Parties, the Required
Lenders and the Administrative Agent agree as follows:

1. Defined Terms. Unless otherwise defined herein, capitalized terms used herein
have the meanings assigned to such terms in the Credit Agreement.

2. Amendment to Credit Agreement. Clause (a) of Section 5.18 of the Credit
Agreement shall be amended and restated in its entirety to read as follows:

“(a) CEI shall increase its board of directors by one member within thirty
(30) days of the Required Lenders nominating a proposed new member of the board
of directors, provided that such member shall (i) be acceptable to the board of
directors of CEI and (ii) not be an employee of, or other Affiliate of, either
the Borrower or any of the Lenders.”

3. Conditions Precedent. The effectiveness of this Amendment is subject to the
satisfaction of the following conditions precedent:

(a) Amendment. The Administrative Agent shall have received duly executed and
delivered counterparts of this Amendment that, when taken together, bear the
signatures of the Borrower, the other Loan Parties, the Required Lenders and the
Administrative Agent.

(b) Representations and Warranties. The representations and warranties set forth
in Section 4 below shall be true and correct in all material respects on and as
of the date hereof.

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4. Representations and Warranties. In order to induce the Lenders to enter into
this Amendment, the Loan Parties party hereto hereby jointly and severally
represent and warrant to the Administrative Agent and each Lender that:

(a) Authorization, No Conflicts. The execution, delivery and performance of this
Amendment by each Loan Party that is a party hereto (i) has been duly authorized
by all requisite corporate, partnership or limited liability company and, if
required, stockholder, partner or member action of such Loan Party and (ii) will
not (A) violate (1) any provision of law, statute, rule or regulation, or of the
certificate or articles of incorporation or other constitutive documents or
by-laws of such Loan Party, (2) any order of any Governmental Authority or
arbitrator or (3) any provision of any indenture, agreement or other instrument
to which such Loan Party is a party or by which it or any of its property is or
may be bound or (B) be in conflict with, result in a breach of or constitute
(alone or with notice or lapse of time or both) a default under, or give rise to
any right to accelerate or to require the prepayment, repurchase or redemption
of any obligation under any such indenture, agreement or other instrument.

(b) Enforceability. This Amendment has been duly executed and delivered by each
Loan Party that is a party hereto and constitutes a legal, valid and binding
obligation of such Loan Party enforceable against such Loan Party in accordance
with its terms, subject to applicable bankruptcy, insolvency, reorganization,
moratorium or other laws affecting creditors’ rights generally and subject to
general principles of equity, regardless of whether considered in a proceeding
in equity or at law.

(c) Absence of Defaults. Both before and after giving effect to this Amendment,
no Default nor Event of Default has occurred and is continuing.

5. Continuing Effect of the Credit Agreement. This Amendment does not constitute
a waiver of any provision of the Credit Agreement and is not to be construed as
a consent to any action on the part of the Borrower that would require a waiver
or consent of the Lenders or an amendment or modification to any term of the
Loan Documents except as expressly stated herein. Each of the Borrower and the
other Loan Parties hereby confirms and ratifies the Credit Agreement as amended
hereby and each of the other Loan Documents to which it is a party and
acknowledges and agrees that the same continue in full force and effect as
amended hereby (as applicable).

6. Reference to the Credit Agreement. Upon the effectiveness of this Amendment,
each reference in the Credit Agreement to “this Agreement,” “hereunder,”
“herein” or words of like import refer to the Credit Agreement, as amended and
affected hereby, and this Amendment shall constitute a Loan Document and shall
be administered and construed pursuant to the terms of the Credit Agreement.

7. Arm’s Length/Good Faith. This Amendment has been negotiated at arm’s length
and in good faith by the parties hereto.

8. Counterparts. This Amendment may be executed by all parties hereto in any
number of separate counterparts each of which may be delivered in original,
facsimile or other electronic (e.g., “.pdf”) form, and all of such counterparts
taken together constitute one instrument.

 

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9. References. The words “hereby,” “herein,” “hereinabove,” “hereinafter,”
“hereinbelow,” “hereof,” “hereunder” and words of similar import when used in
this Amendment refer to this Amendment as a whole and not to any particular
article, section or provision of this Amendment.

10. Severability. In case any one or more of the provisions contained in this
Amendment shall for any reason be held to be invalid, illegal or unenforceable
in any respect, such invalidity, illegality, or unenforceability shall not
affect any other provision hereof, and this Amendment shall be construed as if
such invalid, illegal, or unenforceable provision had never been contained
herein.

11. Headings Descriptive. The headings of the several sections of this Amendment
are inserted for convenience only and do not in any way affect the meaning or
construction of any provision of this Amendment.

12. Governing Law. This Amendment is governed by and will be construed in
accordance with the law of the State of New York.

13. WAIVER OF JURY TRIAL. EACH PARTY HERETO HEREBY IRREVOCABLY AND
UNCONDITIONALLY WAIVES TRIAL BY JURY IN ANY LEGAL ACTION OR PROCEEDING RELATING
TO THIS AMENDMENT OR ANY OTHER LOAN DOCUMENTS AND FOR ANY COUNTERCLAIM THEREIN.

14. Final Agreement of the Parties. THIS AMENDMENT, THE CREDIT AGREEMENT AND THE
OTHER LOAN DOCUMENTS REPRESENT THE FINAL AGREEMENT AMONG THE PARTIES AND MAY NOT
BE CONTRADICTED BY EVIDENCE OF PRIOR, CONTEMPORANEOUS OR SUBSEQUENT ORAL
AGREEMENTS OF THE PARTIES. THERE ARE NO UNWRITTEN ORAL AGREEMENTS AMONG THE
PARTIES.

[Signature Pages Follow]

 

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IN WITNESS WHEREOF, the parties are signing this Amendment as of the date first
above written.

 

CHENIERE COMMON UNITS HOLDING, LLC, as Borrower By:   /s/ Don A. Turkleson Name:
  Don A. Turkleson Title:   Chief Financial Officer CHENIERE ENERGY, INC., as a
Loan Party By:   /s/ Don A. Turkleson Name:   Don A. Turkleson Title:   Senior
Vice President and Chief Financial Officer CHENIERE MIDSTREAM HOLDINGS, INC., as
a Loan Party By:   /s/ Don A. Turkleson Name:   Don A. Turkleson Title:   Chief
Financial Officer CHENIERE LNG SERVICES, INC., as a Loan Party By:   /s/ Don A.
Turkleson Name:   Don A. Turkleson Title:   Chief Financial Officer CHENIERE
PIPELINE COMPANY, as a Loan Party By:   /s/ Don A. Turkleson Name:   Don A.
Turkleson Title:   Chief Financial Officer

Signature Page to Amendment No. 1

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CHENIERE PIPELINE GP INTERESTS, LLC, as a Loan Party By:   /s/ Don A. Turkleson
Name:   Don A. Turkleson Title:   Chief Financial Officer GRAND CHENIERE
PIPELINE, LLC, as a Loan Party By:   /s/ Don A. Turkleson Name:   Don A.
Turkleson Title:   Chief Financial Officer CHENIERE SOUTHERN TRAIL GP, INC., as
a Loan Party By:   /s/ Don A. Turkleson Name:   Don A. Turkleson Title:   Chief
Financial Officer CHENIERE LNG, INC., as a Loan Party By:   /s/ Don A. Turkleson
Name:   Don A. Turkleson Title:   Chief Financial Officer CHENIERE LNG
TERMINALS, INC., as a Loan Party By:   /s/ Don A. Turkleson Name:   Don A.
Turkleson Title:   Chief Financial Officer

Signature Page to First Amendment to Credit Agreement

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CHENIERE LNG HOLDINGS, LLC, as a Loan Party By:   /s/ Don A. Turkleson Name:  
Don A. Turkleson Title:   Chief Financial Officer CHENIERE ENERGY SHARED
SERVICES, INC., as a Loan Party By:   /s/ Don A. Turkleson Name:   Don A.
Turkleson Title:   Chief Financial Officer CHENIERE CREOLE TRAIL PIPELINE, L.P.,
as a Loan Party By:   /s/ Don A. Turkleson Name:   Don A. Turkleson Title:  
Chief Financial Officer CHENIERE CORPUS CHRISTI PIPELINE, L.P., as a Loan Party
By:   /s/ Don A. Turkleson Name:   Don A. Turkleson Title:   Chief Financial
Officer CHENIERE LNG O&M SERVICES, LLC, as a Loan Party By:   /s/ Don A.
Turkleson Name:   Don A. Turkleson Title:   Chief Financial Officer

Signature Page to First Amendment to Credit Agreement

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CHENIERE ENERGY OPERATING CO., INC., as a Loan Party By:   /s/ Don A. Turkleson
Name:   Don A. Turkleson Title:   Chief Financial Officer SABINE PASS TUG
SERVICES, LLC, as a Loan Party By:   /s/ Don A. Turkleson Name:   Don A.
Turkleson Title:   Chief Financial Officer CHENIERE SOUTHERN TRAIL PIPELINE,
L.P., as a Loan Party By:   /s/ Don A. Turkleson Name:   Don A. Turkleson Title:
  Chief Financial Officer

Signature Page to First Amendment to Credit Agreement

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GSO SPECIAL SITUATIONS FUND LP, as a Lender By: GSO Capital Partners, LP, its
investment advisor By:   /s/ GEORGE FAN Name:   GEORGE FAN Title:   CHIEF LEGAL
OFFICER GSO COF FACILITY LLC, as a Lender By: GSO Capital Partners LP as
Portfolio Manager By:   /s/ GEORGE FAN Name:   GEORGE FAN Title:   CHIEF LEGAL
OFFICER GSO ORIGINATION FUNDING PARTNERS LP, as a Lender By: GSO Capital
Partners, LP, its investment advisor By:   /s/ GEORGE FAN Name:   GEORGE FAN
Title:   CHIEF LEGAL OFFICER

Signature Page to First Amendment to Credit Agreement

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BLACKSTONE DISTRESSED SECURITIES FUND L.P., as a Lender By: Blackstone
Distressed Securities Advisors L.P., its Investment Manager By   /s/ GEORGE FAN
Name:   GEORGE FAN Title:   AUTHORIZED SIGNATORY

Signature Page to First Amendment to Credit Agreement

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SCORPION CAPITAL PARTNERS, LP, as a Lender By: Scorpion GP, LLC By:   /s/ Nuno
Brandolini Name:   Nuno Brandolini Title:   Manager

Signature Page to First Amendment to Credit Agreement

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THE BANK OF NEW YORK MELLON, as Administrative Agent and Collateral Agent By:  
/s/ ROBERT D HINGSTON Name:   ROBERT D HINGSTON Title:   VICE PRESIDENT

Signature Page to First Amendment to Credit Agreement