In our current state of heightened alert, there is a no-fly zone over Disneyworld. There is no no-fly zone over downtown Chicago, home of the tallest building in the US. The mayor and governor there seem to think there's something wrong with that.

By the way, in case you were wondering, the FAA's spokesman, discussing the current no-fly zones (which also include New York and Washington DC) says that "there is no specific, credible threat for Disney".