Thinking more of the bride really, from the weddings I've been to it seems to be the norm/expectation for the bride to hit the middle of the dancefloor, sashaying and strutting around to the typical party hits, life and soul of the party.
I don't do that sort of dancing and I wouldn't feel comfortable with it, without wanting to sound like a killjoy. Not sure what to do, I really cannot do that sort of dancing.