We did almost that exact trip 2 years ago. My kids were 13,11, and 7. If you are going to bring a stroller I would do small because of the space. Ask your travel agent or Disney about sleeping options for the 2 year old. They do have bed rails on board.
We really enjoyed the stingray feeding/adventure on Castaway Cay. Snorkling was great as well. All of my kids loved that. we did 2 princess meet and greets. In Nassau we did not do an excursion but just walked around town. On Board the adults at brunch at Palo which was excellent. DH asnd I aslo got Rainforest Passes for the spa to use the showers, sauna and hot tub. It was great.
We are doing a 7 night this June and I can't wait! If I think of anything else I will add it.
Kelly
DS 1 12-02
DS 2 12-04
DD 07-08