Cancún it's the best option if you wanna enjoy your vacactions. The best places to visit are: Xcaret, X-Plor Fuego (that means on night and recommend you to buy the package of unlimited photos), Cozumel (Catamaran), Fifth Avenue, The hotel zone, Tulum, Maya Museum and there are so many places but those ones are the best ones. But the only disadvantage it's that everything is fully expensive.
In reality, you may think that there is nothing interesting about a public beach, but what I particularly like about this one is the view it offers of the Caribbean Sea. There is no doubt about it, it is spectacular. Worth getting up in the morning, if you're an early riser go from 7 or 8 in the morning to get a palapita, bring a good book and your camera. Enjoy.
Turtle Beach is a place where you can enjoy a wonderful swim in the Caribbean Sea. At this beache of Cancun you can swim with your young children and there are restaurants for eat rich seafood and drinks, as well as Bongee jump.
In my opinion, it´s one of the most romantic beaches in Cancun. Together with dolphins beach, it´s better known as "El Mirador" because here after searching many places I found a peaceful place and I spent the most romantic night of my life with my now wife. We stayed on the beach from sunset until dawn. It´s very quiet and safe as there are a lot of hotels and there are security personnel around for 24 hours.
This beautiful beach with turquoise water and white sand is at kilometer 10 of the Cancun hotel zone. It's in a fairly open zone, sometimes the surf is strong, and there are so many streams in the area that water skiing and parasailing are widely practiced. The official hours of this public beach are from 8:00 to 18:00, during which there is monitoring and beach shacks.
For me it was an awesome experience and the fun was unlimited - I enjoyed the morning, the afternoon and the night and not only on the beach but in the hotel and around the place. I enjoyed experiences such as learning to dress like Mexicans and visiting other nearby sites. I was presented with the opportunity to dive into new individual jet skis and see the range of coral reefs under the vast sea and it was good and the best place to start to relax. Actually it was the best adventure and I say it's an adventure because I left without luggage and had to buy lots. Glad you are enjoying life.