For any referral made prior June 19, 2017, the terms outlined in the answers above apply if the referred traveler books their first tour after June 19, 2017. For any referral made prior to June 19, 2017, wherein the referred traveler has previously booked a tour, any earned credit will be transferred to your account. Any referral for which you have already received a credit does not count toward new program benefits. Any previously earned credit will be valid until June 18, 2019, or until it is redeemed.