We recently returned from our Jan 19-23, 2015 4 night cruise on the Dream, 2 parents in mid 30's and 2 daughters, 5 & 7. This was our first Disney cruise but we have been on 7 RCCL cruises, mainly on the Freedom class ships (Liberty, Independence). We have also been on 1 Carnival cruise.
In summary, the cruise was excellent and we would highly recommend it to anyone. My biggest concern is the value for the money.
We were in 7690, an aft balcony room, which cost ~$2800 and was booked 11 months before the sailing. A neighboring (standard) balcony room was ~$2600 and interior rooms were ~$2300. The increased cost from an interior to an aft balcony seemed very small compared to our prior experiences with Royal Caribbean ships, where interior to balcony costs can be more than double. So we splurged on the aft balcony for this trip.
7690 is an aft balcony just starboard from center. This seemed to be a great location for viewing Castaway Cay and the ship had backed into the docking area and the aft faced the beach areas. Also, the funnel smoke never seem to be over the back of the ship. This room did see a little noisy when the docking occurred at Castaway Cay and Port Canaveral.