re: Will you do the ‘tip the bill challenge?’

Not at a lot of places, but it is at some very high end restaurants. At a restaurant like Commander's Palace or the Brennan's restaurants wait staff can make a pretty legit salary. I imagine at some higher cost of living cities those types of restaurants' wait staff can get into 6 figures pretty well. That's a pretty exceptional example though. I wouldn't necessarily characterize it as "lots of places."

I had a professor at LSU who moonlighted as wait staff at Dickie Brennan's Steakhouse. He claimed to make more money at that than he did with his phd. Probably more of a statements about university professors' salaries though.