So if you buy stickers with a credit card, an Amex, say, what kind of reciept do you get, and what shows up on the statement. Specifically does it say something like. American Airlines PLT500UG.00088222, etc.

Or does it say "upgrade" or "business class upgrade" or the equivalent in there prominently. The difference has obvious implications for those many of us that bill back travel to tightwad clients. Just curious.