Since the Mardi Gras will be wrapping up April 30 and the Fireworks don't start until July 4th, what special event will be going on while the May and June guests are at the Parks??
Light crowds.
Except for the holiday weekend May 30th, and Fridays in May for school field trips, you get the park all to your self. Enjoy the short lines, empty walkways, and quiet at your hotel pool.
I've heard mid-May now for several months but yesterday they showed a preview of Fear Factor Live on tv and said it would open in June. The food challenges were a Spam milkshake, chocolate covered bugs (several varieties--ants, grasshoppers, etc.), and eating live grubworms.