The kids activities are great, if you are going to spend much time at the hotel, and the pool is nice. However for us, the rooms felt old and kinda dirty, this is after the remodel. The "food court" was a joke. I've said before it's not a ruin your trip kinda place, but we certainly won't go back. In part I am sure it's just that we are accustomed to staying at nicer hotels, for some I am sure the accomodations are adequate.
For us, even though our trips are also about the kids, we decided to stay at the Courtyard right next door on our last trip. They had a nice game room, and our kids loved that. Plus the rooms were by far nicer and cleaner then the SUnspree. It would be quite a hike to DD from there, it's at least a mile and along a VERY busy road, I would advise driving.