You can go sky diving. There are everglades tours. Museums, Cirque Du Soleil, beaches, botanical gardens, wild life refuges, race car driving experiences.......Tampa Aquarium,Museum of Science and Industry in Tampa (MOSI), Dali Museum in St. Petersburg,
If you want to stay in Orlando airport area you can priceline at $35 and get the Country Inn and Suites just north of the airport. Good basic hotel with free wifi and breakfast, decent pool, and near many chain restaurants. It is located 5 min north of MCO and easy access to highways. I stayed there many nights when I was working in Orlando.