Am presently on the MJ, and today is a "Perfect Day at Coco Cay", and the price for the water park is $79.00, and $54.00 to ride the balloon. We spent a few hours by the pool, and enjoyed lunch. The price for enjoying the beach, pool and several restaurants is "ZERO".
We only saw the balloon go up twice, and one time it looked like there were only 3 or 4 people, even though it holds 30.
The food served on the island, especially the hamburgers, I consider to be an upgrade from the ones served in the Windjammer.