There is a company in town giving a 6-7 hour tour called Orlando City Tour:
The first point of interest on the City Tour is a journey around Lake Eola. See the heart of downtown Orlando. Then it's on to Winter Park where you will take a narrated scenic boat cruise from which you can view the city's beautiful homes and Rollins College from the waterway. Back on dry land, you will be given free time to wander the boutiques and stores of Park Avenue, the Orlando area's famous European-style shopping and dining district. To finalize the afternoon we head south through the attraction region to the City of Celebration, Disney's vision of the "perfect" community.This tour is around $60 for adults and $50 for children. Wow.