It is what it is. OLD PEOPLE, DANCING. Check out these moves... 

At weddings, the group dance thing will just never go away. It could be The Hustle, The Macarena or this number here; people are always going to jump in the mix.

Its actually probably a good way to get the eldery involved. They can team up with someone, have someone close by and it allows them to dance along with the fam. At this lady's age 102, I think she deserves to sit on her ass, eat cake, sip champagne and let everyone come up to her and give her love ala' The Godfather, but granny wants to shuffle and hop to a wedding and party favorite...