Acually just left Cozumel this week. The water is gorgous. The current can get very strong so be prepared to drift fast if you go out beyond the sand beds. There are a ton of charters you can take around the island. I have never stayed at that resort and can’t help you there. We did see sea horses, squid, turtles, sharks, eels, and the very unique toadfish as well while we where there. You should have a great time.