Hahahah, "terpinate!"
At my home game, there is generally alcohol, though no one goes crazy with it. As a DM, I’ll imbibe, but well within my limits. 1-2 drinks during a four-hour session.
The last time I got snookered while DMing was back in 4e, which was most definitely the wrong system to be attempting to wrangle while inebriated. I had an enemy they had thoroughly killed show up again at the big end battle. Whoops. That was the last time that happened.
At the open table, only a handful of people drink. I do not (it’s on a weeknight, for starters).