Also, tipping culture is almost like sales commissions. When I waited tables, if I sold a bottle of wine, that could add $50-100 to the bill; I would pocket $10

Also, tipping culture is almost like sales commissions. When I waited tables, if I sold a bottle of wine, that could add $50-100 to the bill; I would pocket $10-$20 more per table. That's a helluva incentive.