That's part of it yes. Bars are a common meeting place for people, and it is not uncommon to have musicians play and dancing as well. All in good fun, of course. And then there is...

[How does he say this in a nice way that isn't vulgar?]

...finding someone to, er, 'spend the night with'. That is very common at bars too.

But either way, the goal is to have fun, which is what drinking should be about. Not 'drowning your sorrows' or anything like that.