This thread has information about
DAS. The first post is up to date; the rest is from when DAS was first started, so no need to read past the first post:
https://www.disboards.com/threads/w...15-digital-das-on-tickets-magicbands.3178976/ (this thread is about WDW, there is another about
Disneyland)
The question you need to be ready to answer is “what prevents my son from being able to wait in the regular line?”
No the diagnosis, but what the issues are with waiting in the regular line. The better you are able to express that (briefly), the more likely that DAS will be issued.
The people who have reported being turned down have mostly had only mobility needs that can be handled with using a mobility device in line.
The accommodation given by DAS is ability to wait outside the lines. You will still be waiting approximately the amount of time that guests are currently waiting in the regular (Standby) line. Guest request a DAS Return Time for an attraction and are given a time to come back. That Return Time can be used any time until the park closes, but another can’t be obtained until that one has been used.
Keep in mind that each guest gets 3 Fastpasses that can be scheduled ahead of time. They are completely separate from DAS and can be used together.
Some people use Fastpasses for attractions with long waits to avoid tying up the DAS for such a long time.
Other people use Fastpasses for attractions the person DAS was issued to does not want to or can’t ride; DAS csn only be used for attractions the DAS holder will be going on.