Several years ago, I had an interesting conversation with a guy who used to tend bar at a popular Larimer Street restaurant. The place gave complimentary meals to professional athletes, which in turn drew larger crowds. All in all, it was a good business proposition.
One night, a big-time out-of-state NFL quarterback came through with his entourage. They stayed awhile, took full advantage of the free food and drink, kept the staff extremely busy, and had a good time. But when the time came to wrap it up, the tip was $10.