There are six of us (my husband & myself and our 4 kids ages 13,11,7,5). Probably the top reason to cruise with Disney is the kids/family entertainment. The Oceaneers Club(young kids club) staff and facility was great... my 5 year old especially made many friends and really didn't want to spend time with us on the boat, except for swimming in the Mickey pool each afternoon. There were even unscheduled character visits in the club several times. Both of my two younger children opted to skip dessert in order to go back to kids club (with the dine&play option where Oceaneers staff pick up kids at the front of the restaurants at 9:15) after our second-seating dinner most nights which says quite a lot about how much fun they were having. We were also very impressed with Edge, the tween club, which had extensive programming for that sometimes difficult-to-entertain age and allowed my two older children some freedom and tons of fun.
The food was spectacular and we ate in the dining rooms we were assigned each night. We never felt the need to try the optional "upscale" dining restaurants because the food was top-notch at the regular/included dining rooms. Animator's Palate was fun the second night we were eating there with the animation show of characters we each drew on our menus. We ate at Cabana's every morning rather than the dining rooms so we could pick from the extensive delicious buffet (including Krispy Kreme donuts which are a fave with our family and not available near our home!), eat outside on the back deck most mornings, and then get on with our day.
We all had fun riding the Aquaduck. We got an early boarding time (11am) to get on the ship and headed right to the pool with our swimsuits so there were no lines to ride when it started up at about 12-12:30. Also we found that the pools and Aquaduck lines emptied out by about 4:30-5:00 each day so we would ride a few times then (without the normal 30 min wait during the peak day time), and still have time for a shower to (maybe) see a show at 6:15 and make our second-seating dinner at 8:15.
We loved the variety shows- a ventriloquist one night and a magician another- which provided laughs for our whole group, but didn't especially love the Wishes show so we skipped the Believe show the last night.
The only critique is the disembarking procedures. Disney usually is impressive with their organization of crowds but not this time (although I'm sure that some of it is out of their control with US Customs). It took an hour to get off the boat from the time we got into line on the ship after breakfast until we walked out of the terminal.