I recently ran a DoE award course and one of their guys was paralysed pretty much from the neck down with only limited motor skills ect - anyway we involved him in every aspect of the course from shelter building to fire lighting he even cooked his own food over the fire ect the guy gained more from that weekend than any able bodied member there.
Just as importantly I pointed out to his fellow students that in a real survival situation (say a plane crash) you would have injured people who can still contribute to the groups survival and this guy was living proof as he pushed himself beyond his own boundaries!
Andy, like my friend, you will gain so very much from this course - enjoy it mate.