Have you been to a large gathering of flyertalkers when the bill arrives?

We don't care one way or the other. Our main focus is on airline miles, we gave up the hotel stuff a couple years ago. The bulk of that we get by flying, the rest is just too little in comparison to worry about.

I would think it's like any joint budget, if it matters you need to either split the bill or keep track of who paid what to keep it even.