Thanks Milky, that may be my best bet, and means I can meet up with folks too.
whats the terrain like as in wheelchair
If I remember rightly you shouldn't have a problem in the trader area, although the area is not huge, I think it was pretty solid ground.
Camp site was grassy, on a bit of a slope but you should be fine.
On a side note - If anyone is thinking of going to this event but has no one to run with, feel free to join in with us Northants Giants. There will be a couple of players with us who have never met the team before so you won't be in the boat alone and will be more than welcome. There's 10 of us going so far and booked in on HMC faction.