Your staff are all likely to be more or less the same age, a good mixture of male and female, and will probably mostly socialise together. In the bar you all work in - because none of them have ever heard the phrase busmans holiday before, or dont sh*t where you eat. It makes a little sense, in a cause/effect kind of way: they spend their working time wistfully watching everyone else have fun and get wasted, so that's exactly what they want to do when they're off work. However, the only thing worse than dealing with an obnoxious, drunken customer is dealing with an over familiar, obnoxious, drunken customer who thinks the rules dont apply to him and isnt scared of the door staff.