I was in Miami last weekend. I stopped at a nice "upscaley" restaurant a short distance from my hotel for dinner. When the bill arrived they had already added an 18% gratuity, with a suggestion to add. I consider myself an above average tipper. I enjoy fine dining and dining alone when I'm out of town or when my wife is out. I thought this was irritating and presumptuous. I've seen gratuities added for large parties, but never this.