TG ALWAYS requires that you present the CC used for purchase --- UA does not. A few years ago I was required to have our son (13 at the time) put on my Visa account and a CC issued in his name so that he could fly from KKC (Khon Kaen) to BKK (alone) to meet us upon our arrival from the States. Ironically he did not have any I.D. and was not required to show it as he was a minor. Go figure!