Closing this thread since the question was asked and answered. There is no point continuing it.
To summarize how
DAS works:
1) Go to Guest Relations in any of the 4 WFW Theme Parks. Other members of your group need to be with you when you apply. If additional guests need to be added later, they will need to come with you to Guest Relations.
2) Explain your disability related needs that prevent you from waiting in the conventional (regular) line.
3) If DAS is granted, your photo will be taken and your Magicband or park ticket will be scanned to link DAS to it.
Other members of your group will also have their Magicbands or park tickets scanned to link them to your DAS.
4) DAS is good for all 4 WDW Theme Parks and will be valid for at least 14 Days (up to 60 for annual pass holders).
5) To use DAS, someone in your group goes to the attraction and requests a DAS Return Time. It doesn’t have to be you. It can be anyone who is linked to the DAS.
But, you will need to go on the attraction - DAS Return Times can’t be used if the DAS holder doesn’t ride.
6) The Return Time will be approximately 10 minutes less than the current wait time in the Standby (regular) line and will be valid until the end of the day at that park. So, you can return to the attraction any time after the return time.
7) Guests can only have one active Return Time at a time. Once the first Return Time has been used, you can get another.
8) To use the DAS Return Time, the person DAS was issued to will scan their Magicband/ticket at the Fastpass Line first. The CM will match the picture on the screen with the person scanned. The CM will clear the machine and the rest of the group will scan their Magicbands/tickets.
If you need other assistance, this is where you would ask for it. Things like sitting in front, avoiding stairs are not part of DAS and are requested at the attraction.
For restaurants, you can add requests when making ADR, but these are general and what is the computer is not specific to totally explain needs in most cases. For concerns about placement, that would be discussed at the time you check in for your ADR.
Even for things like allergies, the ADR note just indicates an allergy; guests get more specific at the restaurent as they discuss with their server or the chef.