bottle party 
noun British
A party to which guests bring bottles of drink.The 1920s, self-evidently, were the era of the bottle party and the Bright Young Things, the Charleston and the shimmy, cigarette holders and mock Tudor....
- And it evokes the period of the eighties, the times of bottle parties and slow-dance.
- Suddenly, in the face of job searches and grad school applications, Greek Week and bottle parties just didn't seem very important, and so they quit.