Another great day trip from Orlando is St. Augustine, Florida. It is a two hour drive from Orlando Florida but totally worth the drive. My family visited St. Augustine, Florida last year and we absolutely loved it! There is a lot of fun stuff to see and do, especially for children. My children loved the Pirate Museum and exploring the fort Castillo De San Marcos. Castillo De San Marcos fort is awesome and we spent about two hours exploring everything, watching the re enactments and they even have working cannon's! The admission prices are just $7 for adults and children under 16 years old are free.
Inside the Castillo De San Marcos Fort
St. Augustine offers so much to do, you can take a guided tour on a horse drawn carriage
For more information on things to do in St. Augustine visit this great website.
Another fun day trip would be to visit LegoLand Florida. My children loved Legoland Florida. We spent the whole day there and wished that we had more time to visit for two days. It is about a 45 minute drive from Orlando. Be sure to read my review on Legoland Florida.
Another great day trip from Orlando is the Kennedy Space Center located in Cape Canaveral Florida. Ticket prices vary. There are several tours offered and you can even have lunch with an astronaut for just $29.99 per adult!