It depends on the restaraunt. 15-20% is standard..25% in the high end places (that I cannot afford). I figure if a meal is $10 (for ease of figuring this math example), sales tax is 8% (80 cents) and tip is 20% ($2)...I figure if I cannot afford $12.80 for my meal, I better not go out to eat...and sometimes this does figure into my decision to eat out or not. My soon to be stepdaughter was a driver for Pizza Hut, so if I order delivery, I would make sure I tip well. I rarely use delivery. I can cook myself or go get what I want for carry out.
I dont tip at those Carside to Go things.. I dont use them....waste of effort...I can go inside and pick it up myself. Same with pizza...I live close enough...I go get it.
If I know someone in my party is not tipping, I call them out on it (and remember not to go out to eat with them again). I understand the whoe large party gratuity being added in ahead.... large parties take a lot of effort.
If a server is not doing their job... and I am certain it is the server's fault, I call a manager over...and request a new server that I can tip properly.
Snakes (Rich )