Our family has been to WDW many times. However this will be the frist trip where DS2 has been showing signs of Autism

. We are in the process of having him tested, so I can not yet confirm that he without a doubt has it, but all the signs are there.
What I would like to know is, ANY info

and help you all can offer on traveling with an autistic child. He's easily overwhelmed in large crowds, doesn't care much for loud noises, and gets frustrated quite easily.
I know the rides to avoid, not to go anywhere near a fireworks show, and to eat at off times...but all other tips are welcome. We want to continue going to WDW and we don't want this diagnosis to cause either of our children to miss out on any of the fun aspects of life. So any tips, big or small, that could help our little guy enjoy himself would be very helpful

.
Thanks!