We really enjoyed the 7 night eastern caribbean cruise of FOS.
The kids enjoyed the activities for their ages (Voyagers and Youth).
Be careful of the arcade... the costs add up quickly. You can limit your child's sea pass account once you get on board.
Room 6330-
Great location for our family. It was near the elevators/ stairs that were on the end where our dining rooms was as well as the kids activity areas.
Balcony really seemed to add space and gave us a little sitting area when some of the family was still asleep.
This room had the two twins made as one king bed and a sofa that folded out for the kids.