At Odakyu Shinjuku station, buy ticket of 360 yen for Sagami-Ohno. The journey to Sagami-Ohno by express takes 40 min, and it is the 8th stop from Shinjuku. You will come to the main exit of the station. When you leave the gate returning the ticket, turn right and walk out of the station. There is a bus terminal, but you need to find the taxi corner.
ISAS guard answers all night.
TCAT is connected directly with Suitengu-mae station of subway Hanzomon Line. Buy a ticket for Fuchinobe 210 yen just before going down stairs. On exiting, surrender your ticket at the ticket barrier. At the bottom of the stairs the taxi stand is to the right. But you cannot take it during other time, other days.