Hi Nancy,
Where in Belize are you going? We just got back from there last week and it was fabulous!!
I'm sure you have other resources, but let me know if you have any questions. We were in San Pedro, so I can make some recommendations if that's where you're going!
As far as Disneyworld....I would recommend Epcot Center. If you're planning to be in that area, drive over to Kennedy Space Center (if you're interested in that sort of thing). We thought that was wonderful!
I'm sure you'll have fun no matter where you go!
Edie