I know, it depends on the situation. Regional customs, ethnic customs, and situations vary greatly around the country.
Customers vary from night to night.
I dance in Greek restaurants in Indianapolis, so I can only speak with authority about them. But in the Greek tradition, at least in Indy, the customers expect to do it. Men and women of all ages enjoy tipping and often give very small children bills to give the dancer. They are often waiting, with dollars in their hot little hands, when I make my entrance. Many restaurant owners and customers feel this is part of the entertainment.