And you don’t even need to have alcohol. if people have seen you with a “drink” in your hand and assume you’ve had some they’re very permissive about free expression of self.
I suppose this is why I like “work parties” not “parties”. At work parties, there’s a deepening of existing emotional connections. People I know and like are showing more of themselves off. If I didn’t like them or didn’t know them, it would be awkward or unpleasant.