With all due respect, I might suggest two other great options that are not in Florida, although they ARE in the United States still: Williamsburg and Southern California.
First, Southern California because it offers so much that you already show interest in. Disneyland, of course, is not only the original Disney park where you can literally walk in Walt's footsteps (and see his apartment), but it is also a nice resort on its own, although it is compact and does not offer the lakes and white-sand beaches and sprawling resorts and sports of WDW. An hour north is all of Hollywood, including the original Universal Studios, with their famous tour of REAL movie stages and props, including many familiar ones. The theme park was an afterthought, not the other way around as in Florida. Other studios, such as Paramount, offer real studio tours as well. At Paramount, you get to see where Happy Days and The Brady Bunch and other familiar sitcoms were filmed, along with seeing the working studio. And, of course, there are the famous Los Angeles beaches, as well as the tours of the stars' homes (tour buses, which usually include Walt Disney's house). Tours usually depart from Hollywood Boulevard, where the famous real Grouman's Chinese Theatre is with its forecourt and the street's walk of fame (including Mickey's star) and Disney's El Capitan Theatre. You can also see a TV show filming for free. Not to mention, of course, San Diego, which has Sea World and its famous zoo and beaches.
Second, Williamsburg is a great destination as well. I love Colonial Williamsburg, which is the town painstakingly reconstructed to the 18th century (but with modern restrooms and other amenities incorporated for tourists). The fireworks and fife-and-drum corps are awesome. The food is authentic and delicious also. It also has resort amenities attached, like WDW, in that it has hotels that they own (such as The Williamsburg Inn, a five-star hotel replete with lawn-bowling, and the family-friendly Woodlands). Just down the street is Busch Gardens, which in Williamsburg is themed after the "Old Country" of eighteenth-century Europe (but these days incorporates modern European touches). It is full of trees and great, well-themed attractions, and is often cited as the world's most beautiful theme park. I have to give it credit for that. Even the rollercoasters are designed around the landscaping. And if you want a "food and wine festival," they are even doing that this Spring. Was there on Saturday, and had a great time. They redecorate the park and open for Howl-O-Scream, then in December as Christmastown, both well-done. Just down the street is Water Country, USA, which was built and named after a local businessman visited WDW and said we needed a River Country here. It started with that concept and has grown into a park of its own. All three of these attractions share ticketing options and have combination offers. (Something Disney does in California but would never do in Florida.) In fact, Busch Gardens is owned by Sea World and offers significant discounts to Sea World pass members. And Virginia Beach is just an hour away, and Washington, DC, three hours. Many Civil War sites are also nearby, as is Jamestown, the first sucessful English settlement (with a lot of Pocahontas memorabilia as well).
So, these are two American sites that I recommend outside of Florida. I could also recommend Nashville; New York; and Lancaster, Pennsylvania; for various reasons.
