Tipping

>sbarro
are you fucking kidding me, you went to Manhattan and ate at sbarro? That's like going to Russia and eating McDonald's.

OP the usual rate is 15% or 20% and it's not required but just good manners to tip.

Thank you for the 1st helpful response

10% is fine. It's low but they'll feel embarrassed to complain because it will make them seem ungrateful.