If you are fortunate enough to receive "free" bottle service at a high-end nightclub—perhaps as a guest of a promoter, a birthday "comp," or because you are part of a VIP group—you are still expected to tip the staff generously based on the retail value of the service, not on the "zero" price you paid. In major nightlife hubs like Las Vegas, Miami, or New York, a standard bottle of premium vodka or tequila typically retails for $500 to $1,000 in a VIP setting. A standard tip is 20% of that retail value. Therefore, if you are given a "free" bottle that normally costs $600, a tip of $100 to $150 for the server is considered appropriate and professional. This tip covers the specialized attention of your server, the busser who keeps your table clean, and the security guard watching your area. If the service was exceptional or if you plan on returning to that venue, tipping higher is the best way to ensure you are welcomed back with similar perks in the future. Failing to tip on a "comped" table is considered a major breach of nightlife etiquette and may result in you being "blacklisted" from future VIP guest lists or promoter tables.