I was a restaurant manager in my 20s and 30s and let me tell you, all these music acts in restaurants wanted to play big shot with house money. I would be clear to these fucks, that they don't get drinks for free, not does anyone else they bring in. Soda, coffee water ? Sure, knock yourself out, maybe one beer after shift if you're not annoying but that's it. You're here to bring in money not spend it. Almost all of them were delusional on how important they were to the business.
In all their defense though , not one of these acts were offended that any clingers they brought with them had to pay unlike moo cow here