My son is high functioning PDD-NOS and, to be honest, he may do just fine with us having more issues with his other siblings. That said, I really don't know how he is going to handle the stimulation and so we've gotten a letter from his doctor basically stating as such. In reading the FAQ here it sounds like that doesn't matter much. The only thing we need to do is go to guest relations at the first park we go to when we get to Orlando and they will decide/issue a GAC. Does this sound correct? What exactly does the GAC get you...according to the FAQ it states it's for attractions only, so would we, possibly, have a separate waiting area? Will our wait be shorter? Can we still all ride together? We've got an infant son coming also who, obviously, can't go on some rides. How will that work with a GAC if my wife goes on a ride with some of our kids while I wait with some of the kiddo's and then vice versa happens. I forget the term for that but I don't know how that works with a GAC.