Pardon some basic questions as I very seldom go to Thailand.

If a passengers flies CX J to BKK I would assume that he gets a fast track coupon, correct? I am asking because I just read from New fast track Policies that possibly not all airlines do so.

Next question is whether a fast track coupon helps much in terms of queuing at immigration - arrival will be about midnight. If queues are long, is there a fast track service that is worth using?

Thank you.