It sounds as if it would be great fun to do a long A-bike ride over a period of a couple weeks, or even a long weekend. Does anyone have any experience with this, and carrying a lightweight tent on their back, as well as other supplies?
Maybe it would be more practical for a group of riders in multiples of two. That way you could have one person carry a small two-person tent, and the other could carry the other supplies.
I guess if you did have a large charity ride, though, maybe you could have sponsors along the way who would offer up rooms for the night. Maybe even churches or other non-profit businesses would let you spend the night.
Let me know if you plan any charity events. I know they would probably be in England, so I would not be able to attend, but I can hope.