My DS8 is T1D and I think I might ask about this during our Oct trip. I don't think it will happen over and over and over again but it is very likely to happen a few times during our vacation.
Every day of our lives, my DS's diabetes is on our minds. We plan for and around it. We check our son often. We have snacks, water and fast sugar on hand at all times. We're even more diligent while out and about at a park, zoo, pool, etc.. Going to a place like Disney takes planning and diligence to the extreme. It's just how it is.
But even if we do everything right and plan to arrive at the beginning of the FP window, things in the World do not always follow my carefully thought out and typed out touring plans. A ride that I think or read would take about 30 minutes ends up taking 45 so now we're approaching the halfway mark of our fastpass return time. Then I might notice my son putting his hand to his head and I ask him if he feels low. He says he's just hot but he's starting to walk slower and looking mad. That tells me he's low but fighting it. So, we look for some shade to sit down and test his blood sugar. He's low but insists he isn't and gets annoyed because he wants to ride XYZ and we're making him rest and drink/eat something he doesn't want to drink/eat. He's not exactly cooperative when he's low. Not his fault...he can't think straight. We have to wait 20 minutes before checking him again to see if his blood sugar is up. 15 minutes isn't enough for him....we end up over compensating if we test too soon.
So, we check him again and he might be fine and ready to go but we still might not make it on time.
Or, we check him again and he's still not high enough so we have to wait longer and definitely miss the FP window.
In this very realistic scenario, we weren't pushing things to the last minute and expecting to be allowed to ignore the FP rules....but trying to manage a disease like T1D while at a place like Disney can be very unpredictable and difficult. With a child, it could happen more than once a day because of the heat and the activity. It would be nice to have a small accommodation like a
slightly extended FP time so that my son doesn't feel like he's also punished for having this disease.
It makes me a little sad that I get the feeling from some of the posts here that people think we should just plan better.
All that said....I plan to go about our business first and IF we find that his diabetes makes it difficult for us to benefit from the FP system, only then will I ask about a GAC.