Hello, we celebrated my daugther's 4th birthday at Disneyland yesterday and had such a wonderful experience because of their Disability Access Service pass. She was diagnosed with ADHD last month and of course before her official diagnosis, theme parks were chaotic.
The DAS pass is designed to accommodate guests who aren’t able to wait in a conventional queue environment due to a disability. We were able to be "in line" without physically being in line, and in the mean time do another ride, grab a snack, use the restroom, or do some shopping, and then return to the attraction at the front of the line. It is very similar to a fast pass, but with shorter return times, 10-30 minutes. I definitely recommend checking in at Guest Relations to see if your family is eligible for the DAS pass.
Blessings to all!