Americans tip probably more than any other country. It make it tough for a budget traveler!

For sit-down service, 20% has become the norm although you can get away with 15%. For counter service, you only need to tip (they usually have a jar) if you feel like it. Then maybe a dollar or two. In bars, you tip approximately $1 per drink but if you run a tab, 15-20%.

For spa services, 15-20% (hair dresser, massage, etc.). Porters, $1-$2 per bag.