While not part of the world of Walt Disney, a trip to Disney Orlando is not complete if you don't include a couple of days in Universal Studios parks. The oldest is the Universal Studios Florida, where you can basically enjoy a lot of simulators and attractions centered on the use of 3D that will make you feel the protagonist of films like Shrek, E.T. or Men in Black.
Since 2014 there is one more powerful reason to take a trip to Orlando: the opening of the Harry Potter area, The Wizarding World of Harry Potter. This part is shared with the other park, Universal's Islands of Adventure, so if you are a fan of the magician, you can't miss it.