Check out Cozumen Insider . com It has a listing of all the parks, entrance fees, amenities, etc. Our last trip to Cozumel, we went to Paradise Beach -- no entrance fee unless you plan on using the water toys (iceberg, water pyramid, water trampoline). Lots of options that are great for family fun.
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Darlene

Mariner of the Seas

Carnival Magic Bloggers Cruise 5

Mariner of the Seas
HAL Statendam Alaska Cruise Tour - 09/09/12; Disney Magic - 12/01/12; Allure of the Seas - 05/26/13