Thanks for the warning, we did go see it and it turned out fine! My son watched the whole movie, and so did my friends son, also with autism! Both of these boys have a history of having to leave the theater. When we first got there he was scared to go in because it was already dark (they were showing ads on the screen 45 min before the movie even started). But once he got used to it he was fine. We had previewed the clips online at home before we went so he knew that the rocket comes down on top of Wall-E but that he was ok. When that part came he started to get scared but I reminded him it was just the rocket and then he was fine. Now we are home and he is playing a Wall-E game on the computer with dad.
I didn't particularly like the movie, it was ok, but kind of depressing. Makes you want to go to the gym and recycle LOL