First Aid is open whenever the park is open, so that won't be a problem. Plenty of room to just park and get warm and the staff are nice with things like that.
This is GREAT to know! It is a great location in the MK, too...so we will probably camp out there some. We will need to go there twice anyway to do breathing treatments and take care of bathroom junk.
That would not be needed. She can just park anyplace that is open and hang out.
I pulled up the
MVMCP map from the DIS site - you want to be aware of what is open and for how long since some things will close before the end of the party. We found that out when we have gone to
MNSSHP and expected more Quick Service Restaurants to be open.
This is a great idea! I have printed this map and circled everything that is "inside"...
One question...is the queue to Space Mountain accessible? She won't ride...but she could wait in line with us?
There are
2 Quick Service Restaurants that will be open - both are very roomy and will be no problem with her just hanging out.
Cosmic Ray's in Tomorrowland
Pecos Bill in Frontierland
I love Pecos Bills!!!
Because they are both large, make sure you know exactly where she is - just knowing she's in there will mean a bit of a hunt.
We all plan to have our iPhones...mostly because they would have be surgically removed from us to NOT bring them. 
And she will have someone with her 100% of the time because of her seizures. I am basically going as her nurse, so I will be with her most of the time, I figure.
Also, Cosmic Ray's has some entrances that are not accessible because of steps. She can get in on the side closest to the Teacups and the side closest to the Tomorrowland Transit Authority track. If she wants to listen to Cosmic Ray, sit in the area downstairs closest to the Teacups. If he annoys her (and he will after about 1/2 hour), the area up the indoor ramp toward the ordering areas are quiet.
This is great information! I never pay attention to steps when I am walking around.
Casey's Corner on Main Street is also open, but pretty small and getsx congested. The other eating places that are open are just snack bars without indoor seating.
I might have to get myself a Casey's dog...but Rachel won't go in there...that place is a madhouse!
Attractions that will be open where she could sit indoors (even if not going on the attraction):
Pirates of the Caribbean has a big covered entryway; maybe not heated, but out of the wind.
Hall of Presidents - people come in there just to sit for a while even when it's not a party in the cold. From there, she could dash out to watch the parade fairly easily or park on one of the bridges leading to the Castle circle area to watch the fireworks.
Mickey's Philharmagic - they may let her sit in the first waiting area even if she is not going into the show if she asks.
Same thing for
Monster's Inc, although the last show of that is 9pm.
These are all great suggestions! We could watch Philharmagic over and over! And if we want a nap, we can check out HoP! 
(Just kidding - I like the new version!)
All the other open attractions don't really have a place to 'gather'.
They don't list the shops that are open, but for MNSSHP, all the Main Street Shops were open (and not that busy). The Tomorrowland shops were mostly open and the ones that a ride empties into at the exit, like the shop by Pirates and the one by Pooh.
And shopping!
There is kind of a passageway between Frontierland and Adventureland near to the Magic Carpets of Agrabah. That is large and sheltered from the wind. It also has some large restrooms where she could take shelter.
I am trying to picture this? I don't think I know where this is? But we can find it! 
4. She would like to watch the parade and Wishes - is there a way to accomplish that and not freeze? Which of the 3 HA Parade spots are the warmest? Does anyone know?
For the parade, none of the handicapped viewing areas are particularly sheltered - the Frontierland one has more buildings nearby, so may be warmer than the one by the castle. We have used the castle one several times for MNSSHP and it's not my favorite. It is very busy and since the whole area is curved, you can really only view the parade when it is right in front of you. Which one is warmer is also going to depend on which way the wind is blowing and how windy it is.
This is a great point. I don't really like being on the hub since it is a circle and you can't see well. We will either do the one at the front of the park or Frontierland. We may do Frontierland just to be "done" first...she may head back after the first parade. (Which is not ideal...we wanted to try to catch the later parade)...
You will see all of the ground stuff for Wishes if you are in front of the castle (not directly in front, just somewhere in front). But, we have viewed Wishes from both Fantasyland and from Frontierland. Both are really nice - you still get the music and you get the fireworks so close you feel like you could touch. So, it's different than in front of the castle, but still really nice.
Great points!
I agree with videogal that layers are really important. She needs to be able to take things off when she gets inside or she will overheat inside, sweat and then freeze even worse when she goes back out. Layers also trap air between them, so several thin layers are warmer than one thick layer (and I am in Minnesota where we had below zero temps today). Make sure she has a hat and possibly a scarf.
Fleece is nice because it traps air.
More great points!
I don't know if you can get these in Florida, but space blankets are really nice. You may find them in the automotive department because people (at least here where it's cold) put them in their cars for emergencies. I've also seen them in stores that sell camping supplies.
They are reflective on one side and when that side is against your body, it reflects your body heat back at you, conserving heat.
Here's a kind of expensive one from REI to give you an idea. We bought some for less than $5, like these in
Cabella's.
Most of those will also protect against some moisture.
That made me think of something else that might be easier to get ahold of in Florida - a poncho! They get pretty hot when you are wearing them in the rain because they trap some body heat. Not as well as the space blanket type things, but would be better than nothing.
We are bringing ponchos! It would be bad if it rained...if it rains and she gets wet, all bets are off for the evening. The same for getting all sweaty...although I don't really think she has issues with that at home and she wears these thick sweaters all the time.
). Just keep a close eye on it when you heat it, as a home-made one won't have any safety testing or heating instructions - take it out to shake regularly, watch it for any signs of smoke or discolouring of the fabric, and perhaps put a small cup of water in just in case (this makes the bag feel a little damp to the touch, but not soggy).
Yay for being MK custodial 
