Has anyone ever used the GAC card for autistic child? How useful is it, do they honor it well? My sister is going with her son who is autistic and he can't wait in lines especially in the heat, but there are certain things he really wants to do. She would love your responses if you have used this in the past. P.S. They are going the Second week in June during Star Wars (she is crazy) but that is the #1 thing for him as he is 9 and a Star Wars fan to the core.