convivialist

noun2

1. •
   A person of convivial habits.
2. •
   (no longer used) A person who drinks alcohol.

   • Herman Melville (1857), chapter 2, in The Confidence-Man, page 10: “…there was no lack of variety. Natives of all sorts, and foreigners; men of business and men of pleasure;…teetotalers and convivialists…”