Hi Live4FW,
We stayed in a six person room at the Explorer's Hotel over NYE. The room we were in had A/C but we didn't need to use it at that time of year! The room was very nice, large size and the bunkbeds in a seperate room would give kids privacy but you'd still be able to check up on them. We were checked in and out quickly with no trouble, friendly staff. They were very helpful when I got sick overnight and called out a local doctor with no trouble. The swimming pool is a bit of a dissapointment as the pics in the brochures make it look much nicer but it's still a good size.
The one complaint we had was one evening we were sat in the restaurant by the pool about half an hour before it was due to close and a member of staff was already stacking the chairs on top of the tables despite people still coming in to eat. It felt quite unfriendly, like they didn't want you there. But other than that small problem it was very nice. We'd certainly go back there.
Two other quick points, 1. the shuttle from the hotel to the park also serves two other hotels so it can get very crowded at busy times. 2. Don't try the pizzas, they were horrible!