We've seen gators the last few years. Disney is supposed to remove them when they go over 4 ft so I wouldn't worry about it.
Didn't see any 'gators on this trip. We have seen them in the drainage areas in Frontierland.
The trip we just had we saw a good 2 to 3-foot snake at POR that hung out near our building for the week. It became our mascot.
Remember, May through June is mating season in Florida for alligators so you might see more of them floating around.
God, I hope Aubriee doesn't see this. She'll freak!