Unless you're dancers who are famously stingy and usually order one drink a night, often water.
PS - the issue is that many social dancers want to dance over being social, and alcohol detracts from it. People have jobs and want to pay to contribute. We ended up settling on a cover charge that comes with food credit so people can booze up if desired, and buy water/snacks if not. Win-win.
They all need bars to dance. They all use the same argument. And quite often they are politely asked to find somewhere else after a few months.