If 1/4 of the crowd buys 2 beers that comes to almost 20K beers! If it avgs out to $10 each, 200 grand is nothing to sneeze at. Multiply that by 10 games per year... sales of $2 MILLION!! 1/2 barrel(standard keg) is $165 retail(wholesale is cheaper, decent beer is more) & pours 165 12 oz potions, so approx $1 per. $200k cost for a return of $2 m, 90% profit.
Somebody is doing just fine!