> After what's often a rather negative dining experience, it's common to be prompted for a tip of 18%, 20%, 25%, or even more when paying. Last two mid tier re

> After what's often a rather negative dining experience, it's common to be prompted for a tip of 18%, 20%, 25%, or even more when paying. Last two mid tier restaurants I went to had the tip options as "20, 25, 30, 35%"