My bet is that this one won't sell out QUITE as fast. The speed of "sell out" had been "slowing" down over the past few years. This year had the "new ship" appeal, but having been on the "new ship" when it's FULL it may not have quite as much "appeal" for return bookers. Plus the members who only did it because "its the Dream" may not need to do it again.
I am thinking of finally doing one in 2012, but I KNOW what the Dream is like full.. (That family pool was a NIGHTMARE I was so glad I did not have kids!)