Tax and tip is included. I wouldn't feel cheap for not leaving a tip at all. Now if you are rich, sure go ahead and leave the nice wait person more tip, but if not, don't worry about it, they are getting their tip. How much of it is the question. My best friends husband is a waiter at the Grove Park Inn Resort and Spa and is really adament about tips. We ate at the Grove Park Inn for their Grand Thanksgiving Buffet, $50.00 a person inc. tax, gratuity and service charge. She told me I should tip more!!! 15 percent was added in, but she said we should make up the difference to make it 20%. I feel that if a business adds in the gratuity, then you don't need to pay anymore. If they want 20%, then they should add in 20% from the start.