We just got back from a two night stay at Wilderness. We have a 4 year old and 7 month old. We loved it, and are already planning a stay in the Winter. Wilderness has something for everyone, you really never have to leave. They have indoor and outdoor go-karts, mini golf, and arcade, bars, restaurants and 8 waterparks!!! We had a blast on the slides and loved the outdoor lazy rivers. There is even an indoor wave pool with a clear ceiling so that you can get a tan...it's like being outside!
I would stay here over every other Dells resort and hope to try the cabins next.