In my area a few places I regularly visit have gone to 18% tip included. When they bring you the check they say an 18% tip is already included and all you have to do is sign the check. They are not looking for anything extra. I like this. I also appreciate that the bartenders and servers at these places tell you that the tip is already included. The worst are those that automatically include a tip but never tell you and unless you read it carefully you are tipping on the food and the already included tip