Yes. Sorry. I had to rethink this one. If the guest's disability is one that precludes standing for a long period without additional factors, then Disney will suggest a wheelchair instead of the DAS.
Denials are rare, and only for guests who appear to be scamming the system. Your explanation of your dd's condition should be sufficient. No doctor's note is necessary.
The reason for this is that the handheld device used by the CM to assign your return time cannot issue return times of less than 10 minutes. Therefore, your wristband will not have a valid return...
I believe that DAS can accommodate your situation and others like it. Assuming that your family will stay together in the parks and ride the same rides, you would only need to assign the DAS to one...
If you have previously used DAS, then you will find that very little has changed for the guest. The card carried by the DAS guest, which was annotated by hand by the CMs, has been done away with....