And ain't that the truth with the patrons. The number of times me and the girlfriend have been sitting at maccs, food courts, etc, etc and it doesn't even matter if the bin is sitting almost on their lap, they'll just leave the tray, leave their rubbish and piss off. We always make an effort to clean up after ourselves, push the chairs back in after we've finished and hunt down a bin for the rubbish and a place for the tray.