My god, people, if you are currently at WDW, stay put! Most of the resorts look like they can survive a major storm. You DO NOT WANT TO BE STUCK ON THE ROADS WHEN THIS THING BLOWS THROUGH! I-4, I-95 and I-75 are major evacuation routes in Florida and most likely both north and southbound lanes will be redirected to facilitate evacuations. So, if you plan on driving to WDW (why?) today or tomorrow, don't.
If you are in a room with a balcony, bring everything on the balcony inside, if you can. Move items away from windows and close the blinds, both sets. Resist the temptation to look out your window or go outside during the storm.
Fill up the bathtub with water to flush your toilets. If you haven't (and I doubt there's any left), go to the food court/gift shop and buy a couple of bottles of water, the biggest you can get.
Always travel with a flashlight and batteries. And charging sticks for your cell phone.
I've lived in Florida 50 years. Been through several hurricanes. The last two I was without power 6-7 days each, most recently Hurricane Hermine. THIS one has me worried...and I'm up in the Florida panhandle hoping it makes an immediate turn eastward and spares Florida's east coast. My niece and her fiance live in Jax, but my brother called them and they are both prepared and will be okay.
I had friends in Miami during Andrew and they showed me videos of the destruction. I went to high school in Miami and didn't recognize streets that I routinely hung out on.
Hope everyone stays safe.