Hi there - great to see that folk are getting organised for this trip.
At the moment, it's looking likely that we'll use the Port Mor campsite near Port Charlotte, as we are discussing some discounted rates with them. Staying there is obviously not necessary if people want to do their own thing, including wild camping.
We'll be setting up a discount code with the campsite so that we all get the better rates when we book, this just hasn't been done quite yet. As for staying in a farmer's field, we are unlikely to be going down that route because several people have expressed their preference for having proper campsite facilities.
Cheers - Dave