yeah, I'm not baller enough to drop a $20 tip on one drink, but I definitelyIf I'm going to be at a club/bar for the night I always tip $20 on the first drink....it will be repaid to you over the course of the night and you'll get top notch service.
subscribe to this strategy in a crowded show/bar - tip a few bucks for the first
beer, and watch the bartender skip over 20 people to serve you the next time up.