I don’t know about Germany, but in Denmark (their neighbor to the north), you ask the employee for a statement from the doctor. The employer pays the doctors fee, and there are strict rules about when they can even ask for it.

Are you seriously saying that the customer who pays full price and no more is “a piece of shit”, and not management who chooses to underpay the staff?

I’m not having any of that. I’d rather just not eat out. Enjoy no tip AND one less customer.

I’ll pay extra when I get extra. I paid over 150% yesterday. I’ve given big tips for free services. People sometimes give my cash tip back assuming I accidentally gave them 10x my intention. But not when it’s a simple transaction when I get what I ordered and I’m paying the advertised price.