open bar

American  

noun

1. a bar at a reception that serves drinks whose cost has been borne by the host, an admission charge, a sponsor, etc..

   Before the banquet there will be an open bar from 5 to 7 p.m.

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Etymology

Origin of open bar

First recorded in 1970–75

Example Sentences

The music, the women, the open bar, the outfits—Armani meets Miami Vice—gave the soiree a Wolf of Wall Street vibe.

From Slate

Guests — mostly in their 30s and 40s tonight and from the heterosexual monogamous community — huddled by the open bar during a welcome reception.

From Los Angeles Times

There’s also been discussions about revamping the Pavilion Club to provide more segmented experiences; perhaps one section would cater to young alumni with a DJ and open bar while another would serve other alumni who want a more relaxed atmosphere where they can catch up with friends over a pregame meal.

From Los Angeles Times

Higher-tier packages add perks such as gourmet dining, open bar access and reserved viewing areas.

From Los Angeles Times

Some bolted for the door; others made a beeline for the open bar.

From Slate