I tip every time I'm at a sit-down restaurant, and infrequently at other places (mostly local places, to keep them afloat - they have it harder than the food chains). That being said, if they want us to tip for just food prep and cooking, maybe make the food half-off, then we can tip them if the food is better than we thought? $5 burger...It was really good, I guess I will give them $9. $5 burger that is crap, well, it stays a $5 burger.