It's a no win situation. UA actually does seem to put trash containers almost everywhere, but some people can't be bothered. Self-bussing of dishes/glasses is not as convenient - some Clubs (eg IAH C South, LAX T7) usually leave trays out for dish returns but others (LAX T6, LAS) don't, which means you have to leave them on the bar, which annoys some bartenders. I usually clean up after myself (annoyed bartender be damned) because I know how annoying it is to go into a crowded Club and the available seats have apple cores, trash, dishes. Not as bad as a diaper on a seat pocket, but that's pretty rare.