Whoa the parks are amazing.
There's lots to do in Florida not just theme parks. We're going in December & will be visiting some of the parks, but we are also going walking, there are lots of nature trails, we are also going to Kennedy Space Centre as we've never been before.
Or you can spend some days at the beach, there are some brilliant books about This year I bought Brit Guide to Orlando & Beyond Disney: The unofficial guide to Universal Orlando......... by Bob Sehlinger. If you are buying books I'd recommend The Brit Guide to Orlando as it has lots of useful info, eg best days to visit parks etc.