Thanks for the replies! He is good walking, he’s physically fit in every way except standing still for long periods. I wasn’t sure if pacing was possible with social distancing. If the queues are moving constantly then we may not have anything to worry about, I haven’t been since Covid because we didn’t want to go without fp for this reason. But maybe not as much to worry about as I thought!
Remember that if you get there, and
DAS happens to be denied, you still have options that might help: First, an inexpensive Rollator is like a walker but with a cushioned seat, and they typically also have a handy storage basket under the seat as well. Most of them fold "flat" for travel, and while you can rent them locally in Orlando, it might actually be cheaper just to have
Amazon drop one off at your Hotel.
Second, remember that you can rent an
ECV from most of the outside vendors in Orlando at any point during your trip. It does tend to be better to reserve a
scooter in advance, but sometimes you need one when you need one! If you decide to go this route, please know that your hubby does not have to drive it all the time - you could drive it for him sometimes, and there is also a very popular "park and walk" strategy that many folks here use: You find a fairly central location, and park the ECV, and then walk around in that area, and do several rides/attractions, perhaps even a meal. Then if you are tiring, and need a break, you have the ECV handy.
The DAS is not a "front of the line" pass - even with a DAS, you will still have to work. your way through the FP+ line where there will be other DAS holders, typically some folks with special passes (because a ride broken down earlier, or maybe a problem with their room, etc.) as well as Wish Kids, and Plaid tours, so it does not guarantee that you will just walk on to the ride - there could still be some amount of time standing/waiting. All it really does is allow you to wait outside the standard queue environment; that's why Disney says if you have a mobility issue (like can't stand/walk for long, or must be able to sit down on demand) that you either bring or rent a mobility device.
If you all decide to go to Guest Relations (at the front of any Park) and ask for a DAS, you will only need to do that once; if granted, it will be active for the entire length of your stay at WDW. Additionally, you should know that Cast Members at Guest Relations will *not* look at doctor's notes, and will not need to know a diagnosis. They *only* discuss why you can't stand in the normal queue with all the other Guests, and how waiting outside that queue for your turn might help you.