Yes... contrary to popular belief... tipping is never, ever included. not at the hotel, not at the clubs/bars/restaurants. the only place it's actually included is in the taxis. you negotiate the rate before you get into the cabs, tip is included in the agreed upon rate. but if you want a drink, an extra towel, prompt housekeeping, or anything that you cannot or will not get yourself, you must tip for it. you may pay $45 to get all-u-can-drink at the clubs.. but that doesn't get you the actual drink. $$ gets you a drink. I'll either take Riki's approach and drop a $10-spot in the beginning, or target my bartender for the night and make sure he/she knows I'm taking care of him/her in the beginning, and I'll hit them again at the end. It's just the way it works when it's you and 3,000 of your closest friends in the club.