Quoting furrbabiesmommy:" They will do the child swap thing and you use either the exit or a special shorter line. well 98% of ... [snip!] ... have used it almost every trip. For some reason every single time we go someone get's hurt or sick and end up in a wheel chair."
Oh! Good to know we can still do the child swap, not sure how that would work. For the most part, we will all be going on the rides, but there are a few (the new Lightening McQueen one, Star tours and a few others) that my youngest is to short for. My parents would still want to do the ride after dh and I take our ASD son, so good to know we could switch out.
From what I've read, it's all in how you present it at the when you ask for it. Like if I just say "Well, he doesn't like waiting" they probably won't give it to u (or a stamp that will help) but if I explain how he can't stand being crowded by people taller than him, the emotional disregulation and self harm if he melts down, etc, we should be ok.