Honestly we put on some ponchos and deal with it! It rains so much in Florida that there's nothing else you can do. Rain makes the strollers go away anyway! One rainy day, we did every Fantasyland ride before 9:30 am, not even kidding. (Park had 8:00 EMH) The waits on rides that are usually 75 ish were 20 or less. Space Mountain was 25 minutes long at night, which is basically unheard of.