I called a friend who lives in Orlando who is retired serviceman. He called someone he said would know, and got back to me just a short while ago, and said they still have a no fly zone . As goofy4goofy said, he also said, there is a limit on how low the planes can fly. He told me 3000 feet. I know I've seen them lower..but maybe that is security..I don't know why, since it seems by the below article that it's all about Disney not wanting advertisers to fly overhead.
He sent me this, which shows the argument..I only skimmed it..it's an older article (seems Disney got the no fly in March of 2003 by an act of congress)..apparently it's about Disney wanting the no fly zone to keep out advertisers. I then went on a search on google and it looks like people are still arguing about it..and are pretty mad. :
http://www.globalsecurity.org/org/news/2003/030511-disney01.htm