We went last year in the summer and I have to say that although people warned us about the heat we were not prepared for the humidity. We didn’t find the heat unbearable as it’s actually only a couple of degrees hotter in the summer, it’s the humidity that’s a huge difference from winter to summer.
Unless we were by the beach, which we love, your skin was damp from the humidity as there wasn’t much air movement once you are away from the beach.
Don’t get me wrong, we thoroughly enjoyed it and we’re going again this August. Just wanted to prepare you more for the humidity than the heat. Even the cameras fogged up within seconds of leaving our room (no exaggeration).
As for the occupancy rate, we found that last summer the “economy” must of been playing a role as the resorts were not full as in previous years. By our second week the resort was down to about 50%. Lots of Europeans and South Americans…loads of fun
If you are prepared, you will have a fantastic time. Dress light ;D