How Sims 2 hula dance?

Answer 1

First they have to learn it from someone who has been to the tropical islands or at the tropical islands (bon voyage) and then you can do it from any music player. (stereo)

Answer 2

Have your sims go on a vacation to Twiki Island (Bon Voyage), find a place with a wall speaker, when a local begin to dance click on the local and select join hula.