When attending the wedding of a mere acquaintance or very distant relative, be advised: You barely got invited. The fact that you’re seated furthest the dance floor should be your first clue.
This is why you need only make your presence known if and when the bride herself greets your table with her “obligatory hello, thanks for coming.” And when we say it is your table she’s greeting, we mean it. Don’t take it upon yourself to fawn over her one-on-one like you’re her favorite aunt or sorority sister or new brother-in-law. You aren’t. So embrace it: get drunk (but not too drunk), dance the night away, and eat every shred of cake in sight. After all, absolutely no one is paying attention to you.