Well, we don't usually dance at the parities.(I'm a Korean). Actually I've never seen someone dance except in the bar :). 

You can see grandpas & grandmas dancing in 파고다공원. or 아줌마/아저씨 in a tour bus.

When I was young, my mom's brothers & sisters had a big party at their houses every year in turn.

They danced. lol

Ahhh, that's so sad :)) lol. In my country we always have a traditional dance by the parties