We go there a lot but never payed attention to that. I know some of the activities were halted after hurricane damage. That is a slower time of year, so it is probably best to call the resort.
There is a zero entry pool and a lazy river they will enjoy. They used to let you use the water park at the Hyatt regency but i think they charge now but maybe they will not offseason - again ask. You have to schedule a beach shuttle which takes you to the Hyatt Regency dock and they take you by boat. Chairs and umbrellas (and bathrooms) are provided, and you can take a cooler without issues. You may want to book your first day the week before you go (I think you can only have one reservation - the next).
It is a beautiful resort, but there has been damage the last 3 years or so during Sept/Oct and things were shutdown. They got the main pool back first but the lazy river takes longer as did the beach. The last 3 trips i have taken, the beach was still under repair. I think everything is open now, but we need a break from the storm surges.