So there's been some more complications:
1) So the Family Deluxe Oceanview Rooms are all gone for the February booking (includes Pixar Day at Sea), and now there's only Verendah style left, which is a $800 USD/$1,100 CAD increase (not chump change for us). Also, I think I misworded the Verendah worry, the worry would be that he would get on the Verendah and get on the railing.
2) My wife just wants to be sure that the 3.5 year old will have enough to do for 5 nights other than be in kids club all the time as he may not be completely potty trained, or be used to floating with a life jacket, may not still sit during dinners or shows. I know people say character meets but other than waiting, those don't take that long.
3) Also having activities that the 5.5 year old and the 3.5 year old to do together - aka could the 5.5 year old be at the splash pad even though it's for younger kids.
4) I assume we can fit a crib in the room?