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bottle service

n. A feature of many upscale bars and nightclubs by which patrons may purchase entire bottles of alcoholic drink for their personal consumption, sometimes including extras such as a reserved table or the services of a dedicated host.

Wikipedia
Bottle service

Bottle service is the sale of liquor by the bottle in mostly American lounges and nightclubs.

The purchase of bottle service typically includes a reserved table for the patron's party and mixers of the patron's choice. Bottle service can include the service of a VIP host, who will ensure that patrons have sufficient mixers and will often make drinks using the patrons' liquor bottle and mixers. The purchase of bottle service sometimes results in cover charge being waived for the purchaser's party, and often allows patrons to bypass entrance lines. The tip is also often included in the price.

The cost of a bottle at such a lounge or club is usually significantly marked up—often by 1000% or more—and can account for a significant portion of an establishment's revenue.