You can find a shady lounge chair if you're there first thing in the morning, and are willing to be back by the walkways and not up on top of the water's edge.
I've been three times, and each time I was over in the area by the "quiet" as in no waves, shallow area of the main pool, because I had a small child with me.
If I go just grownups, I'd probably avoid that area and try the other side over by the snorkling and Storm Slides.