Hi Joey !
We to are cruising on Explorer sailing 4/8/07 so we will be interested in following input for Costa Maya and Belize. As for Cozumel, we did a party boat and beach day and had a blast - it was a younger set but we enjoed the day both on party boat and beach. After, we spent remainder of day in town shopping and ended up at Carlos and Charlies and partied with ships activities staff. We are late 50's early 60's but can keep up the pace. In Garnd Caymen (tendered there) the sun was hot hot hot.. We did the Stingray City charter and then shopped in town. I would not miss this opportunity to swim with the rays...not dangerous from my standpoint..Enjoy ! you will love cruising, its the best.