I wish Andrew would see this thread and reply
I have only today spotted this thread.
Yes, I did this tour in 2005, but in a van with a tail lift.
I was told that Disney had an accessible open top truck on order and that the van that I was riding was to be phased out. My own experience of this tour is probably no longer relavent.
I was told that the plan was to load everyone, including the wheelchair user onto the truck, ride through the savannahs and end up with hors-d'oevres on the truck before going back to the lodge for dinner.
Because the ride vehicle will be different now you will need to make your own enquiries. I am sure they will be able to accomodate you. The only problem I can forsee is that they will have to tie you down, so you might have difficulty looking all around.
The following year, I did the special concierge only tour one afternoon at Animal Kingdom Park. Of the three special tours (I have also done the Wayami tour ) I rate this afternoon tour the best (just) of the three. We went out in onto the savannah in a closed van/small bus with a wheelchair lift. Whenever we stopped, everyone else was abe to move around the van to get the best photographs, but I was tied down. The keepers with us however, took some excellent photos for me using my camera.
In passing, I should add that one of the keepers in the van said that she was in charge of the rhinos. I told her I had seen a TV documentary on British television earlier that year about a rhino from 'an animal park in Florida' being released back into the wild. She burst into tears!!!
Andrew