There's a restaurant I've given up on for one of those fees. It's not on their PDF menus at all, nor the HTML ones. Just a nice little surprise when you go there. Fuck you. Pay your employees out of my bill, or go out of business, but don't tell me I owe 4% more for "kitchen support".

Much like restaurants that want to charge the customer for credit-card fees. Oh, you want to do that? I'll show you why restaurants were among the first to adopt credit payments even with merchant fees: because when you pay cash, some employees steal. And they steal a lot.