In some ways I feel like nailing the choreography to a really elaborate number like this would be more stressful than the whole "getting married" thing.
Holiday parties are lame. Baby showers are boring. Even when a reception is bad, it's still a FREAKING WEDDING. And that's my kind of party.
No one likes to cut a rug with the handsome young'uns more than Gram!
People, get out of his way! You are mere peasants in his kingdom, the dance floor.