I would add a vote for CR. We have stayed at all of the monorail resorts, and while we loved them all, the CR was awesome for the following reasons:
-walkability to MK. We felt so smug walking home from MK at the end of the night, knowing we'd be in bed while folks were still waiting for busses to take them back to other resorts from MK.
-monorailability (I know, not a word, but still, you get what I mean
) to all monorail resorts, MK, and Epcot.
-the CR's Contempo Cafe. It is one of the best quick service places on property. Plus, it's super fun to watch the monorail whip through the CR from the Contempo Cafe.
-the pool. While it's not as amazing as other deluxe resort, it is absolutely fine, plus there is a splash pad for little ones.
-the garden wing. The CR's garden wing gives you a super huge room, three sleeping surfaces, their bathrooms are set up really well with a separate potty area, and the prices for this section are really reasonable. Plus this area of the CR is quiet, away from the hustle and bustle of the main tower, and close to the pool and water parade at night. We found it easy peasy to walk to the main tower for coffee or anything we wanted from the garden wing...it's totally covered and about a two minute walk from everything at CR.
Whatever resort you choose, I hope you have a magical time with your family!