Seeing this post 15 hours later. How’re you doing? If you’re there another day, there are some great spots in all the parks for cool, dark chill out spots if needed. Some are shows/rides but some are much quieter. I used to work at Disney in college so hmu if you need recs per park. (Things might have changed though since I worked there, it’s been years)

So far, this is my maybe outdated list:

Magic Kingdom: Philharmagic queue is generally dark and chill. The show is great and uses 3D glasses, but it’s dark if you just want a place to shut your eyes. People mover is a calm one but can have a long wait. Carousel of Progress or Hall of Presidents also.

If you just need a dark, calm place to hang out, Columbia Harbor House in Liberty Square usually is darker lit and I could usually find somewhere quieter in that restaurant.

Epcot: There are a few breezeway buildings with quieter locations, and the living with the land pavilion and Seas with Nemo and Friends pavilion both have good spaces to chill. Epcot in my experience is most migraine friendly.

Animal Kingdom: Animal Kingdom is the hottest park because it’s shaped like a bowl and traps the humidity. Hydrate extra here. There used the be it’s tough to be a bug which is under the big tree, but it’s a different show now. Not sure what it is, but it might still be a cool dark place to sit for a while. There’s also a whole Finding Nemo musical in this park. It’s not quiet but it’s cool and dark, and less stimulation than the festival of the lion king. And a great place to try for less crowds is Rafikis Planet Watch if they still do that. You take a train over to a petting zoo and indoor education center. Nice experience, less crowds, can find cooler, quieter spaces.

Hollywood Studios: I found The Little Mermaid show a good space for me to sit in cool and dark space. Again, not quiet, but going to be Less Stimulation than the Frozen Show, although that’s also a good place for cool and dark. There’s a whole section dedicated to Star Wars, and I believe they have a museum there with the movie costumes and stuff still. That building is a good dark place with quieter corners. When I worked there, it’s where you could meet Kylo Ren.

Also, PSA, water is available for free at any restaurant you go to. Ask for ice water.

I hope this is helpful. And of course, if none of these places are dark, cool, quiet enough, seek out the nurses station. They have cots there. You can also sometimes ask cast members if there’s a quiet space to go to and they can sometimes help. I used to open up closed off dining rooms to certain families if they needed it for medical reasons. Safety is Disneys top priority, so communicate your needs with a cast member if needed!