Yes! I've done the standing paddle board boot camp type class in the Grand Californian "Fountain" Pool. We signed up very last minute after learning every gym at the resort was being refurbished at the exact same time. It was great. it ended up just being me and my husband. It's definitely challenging staying on the board. I would say this is for people who are in decent shape and used to taking group fitness classes. We've also done a similar class at Aulani (which is in the ocean instead of a pool). In fact, our instructor at the Grand recently transferred from Aulani. I would definitely do a class again. Be aware that if you do the pool class it happens in a reserved pool but while the other pools are open and the bar/restaurant is open so you will have people looking at you from time to time.