y'all are cracking me up, there is SO much more to central Florida than just Disney. Here are some non-Disney things for them to consider
Florida is a BEAUTIFUL state, and there are some gorgeous parks really close to Orlando. If they are going to be in Orlando in the winter they should check out Blue Springs state park and see the manatees in their natural environment
http://www.floridastateparks.org/bluespring/
Rainbow Springs isn't far from Orlando and they have awesome tubing, which is so much fun!
http://www.floridastateparks.org/rainbowsprings/default.cfm
Deleon Springs is also a great state park (and one of the rumored locations of the fountain of youth). It has swimming, canoeing, and one of my favorite restaurants on earth, the Old Spanish Sugar Mill. All of the tables have griddles and you cook your own pancakes. Its not fancy or expensive, but it is SO much fun!
http://www.planetdeland.com/sugarmill/index.htm http://www.floridastateparks.org/deleonsprings/
Daytona beach- its fun, its kitchy, and its close. They could drive over for the day, take in some beach time, walk along the boardwalk, ride the ferris wheel, visit the speedway, tour the lighthouse, there is so much to do!
Kennedy Space Center is really fun, even for those who aren't big space fans. The history is so interesting!
St Augustine is about an hour and a half from Orlando and well worth the drive! The Castillo is amazing and St. Augustine is such a fun city to walk around and explore. It has an almost European feel to it. The ghost tours are really fun and not very expensive, and there are great restaurants. If they are looking for something delicious but not fancy or expensive, they should try out Osteens (my other favorite restaurant on earth!). They have the greatest fried shrimp in the world, nowhere even comes close. I still taste it in my dreams, its that good!
http://www.osteensrestaurant.com/
The Bok Tower gardens are right outside of Orlando and are beautiful and romantic, the "singing tower" is amazing, its a really unique and special place, perfect for honeymooners
http://boktowergardens.org/
The Central Florida zoo is fun, its a smaller zoo, but it has some nice animal exhibits.
http://www.centralfloridazoo.org/
If they are looking for something fun and a little cheesy, they should check out Medieval Times. Its a little over the top, but its memorable.
http://www.medievaltimes.com/
I'll keep thinking and I'll let you know if I come up with anything else, but there is so much to do in Central Florida, they don't have to feel like they are missing out on anything by skipping the parks. Heck, the vacation I just outlined sounds pretty awesome to me!