[03MachMe]

The difference is the pay waiters receive from the restaurant basically all goes to taxes. So they only make what they make in tips. If they were to get paid a normal wage the price of your meals would jump way up. So when you don't tip the waiter makes NOTHING for serving you. At minimum you should tip 15% at sit down restaurants as that is the normal. I have had many friends work as waiters and know how hard it can be that is why I always tip around 20%, unless my service is far exceeding my expectations than I'll do 25-30.