Disney World! Check out Magic Kingdom, Hollywood Studios, Animal Kingdom, EPCOT, or the water parks. We highly suggest going to EPCOT's annual Food & Wine Festival. This happens every year from beginning of September to end of November.
Universal Orlando Resort! We love Universal Studios and Islands of Adventure. Make sure to get the park hopper so you can go to both.
If you are traveling with your kids, Legoland is a fun, family-friendly adventure park for the whole family to enjoy!
Head to the Beach! Apollo Beach is the closest, or make a day trip and venture out to Florida's most famous beaches, St. Pete Beach, Clearwater Beach, or Anna Maria Island.