Used to work Food Service in a previous life, I've been in the Corporate Hive for many moons now and you know what? There are times I would rather be back working in a Restaurant or the like.
Rude assholes everywhere and you never escape them.
Thing I do have to say is through my observations those like myself who have ever worked in the Service Industry tip fairly and clean up after ourselves. This comes from having to clean up after self entitled filthy pigs and I'm sad to say that's fairly common these days.