Auditioning...How difficult is the transition?

If you can pick up on choreography fast, they wont care about your experience that much. However, it isn't as easy as it looks. The skill of picking choreography up fast takes years to hone. It comes from doing it in class over and over again. That is really the only way you get skill in it. It does come more natural to some people than to others however. It is worth a try to see how easy it is for you.