Hi Sarah,
Welcome to the Disney Parks Moms Panel and thank you for asking us a question! I just had the chance to visit
Disney’s Typhoon Lagoon Water Park, and my little guy still refers to it as his favourite day during our visit to Walt Disney World Resort.
I can confirm that I saw several
Disney's PhotoPass Service photographers during our splashtacular day of fun. If you’ve purchased
Memory Maker, then you should absolutely be able to download those photos as part of your package.
As for
cabana rentals at Walt Disney World Resort's Water Parks, my understanding is that they cost a flat fee for the day’s use, regardless of how many Guests occupy them. I don’t believe that there is a lower fee for Guests with disabilities, either. That being said, it never hurts to ask, so I encourage to call (407) WDW-PLAY or (407) 939-7529 for more information and to make your reservation, should you choose to do so.
Have a Magical Day,
Lynne