You will not be able to book a Catagory 2 (2 Bedroom) with DVC points. You can ask to pay the cash difference when you check-in at port, but this will be based on availablity. (We did this last year and moved from Cat 9 to Cat 7) Due to the few number of Cat 2 on the ship, I would not count on there being a Catagory 2 available when you check-in.