I'm going on a Western Caribbean Cruise and need advice?

Question

I'm sailing on the Carnival Glory to Cozumel, Belize, Roatan and Freeport, Bahamas and have been looking at the shore excursions booked through the cruise line. Have any of you taken this cruise or a similar one and can tell me the best things to do with two kids 10 and 11--especially in belize and freeport. Thanks in advance