I cruised with my mom in January on the Disney Fantasy as a girls' trip. We had cruised on the Fantasy once before a few years ago so we had some idea of what to expect. Overall, we had a wonderful, relaxing time and I would recommend this trip to people/families of all ages.
PRE-CRUISE: We stayed at the Hyatt MCO based on recommendations from others. My flight landed around midnight, so this was incredibly convenient. We took the Disney transport the next morning to make things as easy as possible and ended up on the first bus. Despite my mom's fears, our luggage did "magically" make it to our cabin later that day.
CABIN: Our cabin was on the 6th floor and was quiet and easily accessible. We prefer the stairs and the elevators could be very crowded.
A great cabin - it was very centrally located and close to the forward stairs/elevator. We didn't hear any noise from the hallway.
We love Castaway Cay! Serenity Bay is probably my all time favorite beach. We unfortunately had poor weather, but even Disney can't help that!