I’d just like to reiterate that it’ll likely be hot and you don’t want to forget your sunscreen. A sunburn on the first day or two will make the remaining days miserable. Most of what you do at the theme parks is outside walking from one place to another. Even if it’s 60 degrees and breezy wear sunscreen. Even if it’s kinda cloudy wear sunscreen. You can get burned without even realizing it until later. I’ve lived here since '68 and have suffered from my own misjudgement of the sun more than once.
My suggestion for the 8th day is rest. That itinerary sounds exhausting. (but I hope you have lots of fun)
BTW, regarding sunscreen. I know people are just being helpful, but I think you missed the part where I said I work in the Middle East! Orlando is ~12° North of where I work. I don’t notice 100° as being that hot anymore. But, I’ll wear a hat and sunscreen. I know my wife will for sure.
Heat and sunscreen don’t necessarily go together. It’s been 50 outside and we were out and about in the parks and I still put the screen on. The sun is always out and at the parks there’s not much in the way of shade, unless you duck into a shop for some relief and AC. I find between 9:30-3 to be the worst for sun.
I imagine it shouldn’t be much different than Dubai or Mukalla, or Hong Kong for that matter. The trick is to pace yourself, drinks lots of water, and take advantage of the air conditioned buildings along the way.