Keep in mind that PO-FQ and PO-Riverside are sister resorts, so you can also use all the pools over at Riverside as well, which includes a main themed pool "Ol'Man Island" and several quiet pools!
While there is only 1 pool at PO-FQ, there are 6 pools, one a very nicely themed at PO-R that are just a 5 minute boatride away. We used both themed pools during our last trip. DD enjoyed both!