Just came home from Orlando yesterday. We stayed at the Beach Club Villas in a nice 2-bedroom villa. The trip is always great and too short.
As far as the pool goes we love it. The water slide is a favorite of my 3 teens. Yes, it has a sand bottom. I find it softer than concrete. There are plenty of places to go in the pool of various depths. There is also a small lazy river.
Everyone has there own tastes. I dislike things my friends love. If you don't like the pool don't go back. If you're staying at Disney there are lots of hotels and pools to choose from to meet your tastes.
The important thing is make sure YOU are happy. Vacations are too few to ever have something that does not please you 100%. Enjoy your next trip!!!