I think it's funny when a bunch of us from work go to an iDine restaurant for lunch. Sometimes there are 8 or so of us going, and about half of us are mileage wh*res, so we are all whipping out cards when the bill comes. The other folks (the "normal" people, unlike us) drop cash on the table, and the rest of us scrap for the cash like vultures, offering to put the whole thing on our card.
Usually one of us will nonchalantly open with "I'm low on cash guys, let me just throw this one on my card" to which two or three others yell "Oh no you don't! Besides, you're a Northwest guy and AAdvantage is giving double miles right now!" One guy is iDine Prime, so if he succeeds in sneaking a big chunk of the bill onto his card, we hold him up for beers at the next happy hour. (At an iDine bar, of course!

)
It's kind of a humorous scene to outsiders...