Excellent topic, Pete
, as Disney is one of my favorite things to talk about. Your best bet is one of the higher-class on-site resort restaurants. I hear the restaurant at the Grand Floridian, Narcoosee's, is quite excellent. Menu includes lobster, baby conch, rare tuna fillet, swordfish and roasted grouper with crabmeat crust, filet mignon, chicken, Orrecchiette pasta, double rack of lamb and gator steaks.
If you are interested in steak, the Yachtsman Steakhouse at the Yacht and Beach Club is also recommended. Prices can go up to $60 per entree. You can head over to Intercot.com
to get more info.
Personally, I'm not as much into the romantic atmosphere. If you want FUN, try the Hoop Dee Do Revue at Ft. Wilderness. Lots of fun dining in an Old West atmosphere, includes a show.
Just my thoughts. Congrats on getting married.