Using First Aid Stations

Hello, earlier this year hubby was diagnosed with pulmonary hypertension. Basically because of the sarcoidosis in his lungs his heart is now enlarged through working harder to pump blood through lungs that don't function properly. It's a life limiting condition and needs a heart-lung transplant to get a few more years.
We booked this trip last year before this was known, and his specialist says needs to keep cool, lower stress etc so not to put more strain on his heart. I got some cooling towels which do help and obviously coasters are out, which is a shame because he loved Test Track and really wanted to do Flight of Passage but we're going to be sensible and avoid anything with a warning triangle on.
So getting to the point, ( at last ) if he needs to cool down by lying down ( because that works best ) can we just roll up to a First Aid station and if space available do so? We've never used a First Aid place before so don't know how they work
As always, thanks in advance for any help.

Yes, you can. They are very accommodating. I've done it before when I was overheated.

Thanks Disney4us2. That's very reassuring. We're going to be careful and try to avoid overheating, the dizziness that comes with PH but good to know we can get help if need be.

They are very helpful. They would rather you get the help before it becomes an emergency situation.