It’s almost mandatory now that you leave a tip in practically every restaurant. And if you don’t or it’s too small, the next time you come in you won’t get fast or good service.
20% is waay to much IMHO. It now costs an average of 50-60 dollars for 2 people to eat out at a decent restaurant. $10- $12 for a tip is making it even more expensive.
I’m still using the old 15% rule...............
We do 17% normally. 20% of service is above normal.