I was in Cancun 4 years ago. I absolutely loved it. The ocean was crystal clear blue and snorkeling was great. I stayed at the Omni, which was beautiful. Both the pool and the jaccuzi had swim up bars that never stopped serving. I also got some great jewelry at fantastic prices. I'd love to go back. The only thing I would recommend is staying at your hotel and in the tourist sections. The poverty of the city itself is very depressing. I don't know if it's changed much in the past 4 years, but I had the best time of my life there. (even WITH my ex-husband.)
Red