Smile. Are you smiling? Now hold it for 8 hours. Impossible, right? There is going to be moments when your server isn't smiling either. Don't yell at them. Shouting, "Smile!" at anyone makes it the last thing they want to do. You also don't need to stop them and ask if there's something wrong, especially if their boss is within earshot. Now there's something wrong. You just got them in trouble. So tell me, when did you join the Mood Police?

  See that space at the bar where the waitress gets her drinks? Why do some people insist on standing there and cutting her off? Ditto for the bar entryway. Why would you plant yourself there and lean on the bar? Have you not noticed the servers need these areas clear so they can get and serve their drinks? Are you really that clueless to not notice that blocking your servers hinders them from doing their job? I know, I know, you just don't care. That would be especially great if you burned them with your cigarette while they're trying to get around you for the umpteenth time. Then you get mad when you are asked to move. If your server has had to yell, "Excuse me!" more than twice, you are being a nuisance. Pull your head out of your ass and move it.