One article made this claim:
Before you are allowed inside the park, you can see an increased security presence at the front gates. Large metal detectors are set up at the entrances of Disney World's four theme parks. Security thoroughly goes through each guest's bag, pulling out items and opening wallets.
I went to Disney's Hollywood studios in the Orlando area to test the claim that they would be looking for firearms by opening wallets and running guests through metal detectors. To test the claim, I decided to carry my J frame Smith and Wesson in a pocket holster in the front right pocket of my jeans.