I never followed up on this posting.
It turned out that our hotel provides a shuttle from the airport to the hotel, and then from the hotel to the port. Since they provide a free shuttle for able bodied guests, they will also provide an accessible shuttle for those that need one. We did purchase ship transfers from the ship to the airport after disembarkation. Last cruise, the ship provided a bus to she ship, where they folded my scooter and put it underneath, and from the ship, they provided a minivan with a ramp.
If anyone else is wondering about this, check with your hotel.