If you don’t tip the wait staff, stay home.
And leave a nice tip. If you can't afford that then you don't need to be eating out in the first place! I know food servers that get left a few dollars after waiting on a group. Seems everyone thinks since they are in a group the others will leave enough to cover their sad tips. $3 is my minimum tip for Sonic. Even if I only get a milkshake. Those kids are working not mooching at home. Older adults are there working because they have to.