NOLA bars are bustling with mixologists, spirit-savvy patrons and the rattle of ice in shaker tins.Bars can be a great time if you know how to act.Bartenders deal with people every day, from every walk of life - wealthy, poor, young and old.This list of annoying habits that'll undoubtedly piss off your bartender will help you receive fast and friendly service, if you can avoid them; save yourself, your friends, and your bartender from friction or discomfort by NOT being "that guy.