There is a lot of opportunity for Latin Dancing. I went in January, and the disco had 1 or more latin nights. They also had latin dancing in other locations. I seem to recall only 1 ballroom dancing, but Jan. was long time ago. I need to go again to refresh my memory :-)
By the way, the disco on AoS is awesome. It's 2 stories in a gothic theme. You'll love it and the rest of the ship.