We saw one years ago sunning himself lakefront at the Caribbean Beach Resort. The bus driver had to assure folks that he was real, not an audio animatronic, lol.
A couple of years back we were driving our rental car on the airport access road heading toward WDW when an enormous gator charged out from the side of the road and crossed all 4 lanes rapidly. The car in front of us darn near went off the road, and I darn near had a heart attack, lol.
It is a safe bet that any body of water in Florida will have alligator(s) in it.