Hi - starting to plan a large reunion-type event in 2016 and camping is probably going to be the most affordable option which is essential as most of the families will be keeping to a tight budget. The trip is for potentially about 30 families (roughly 4 per family) and we'd like to camp together and not worry about bothering others.
Doone Valley Campsite in North Devon - lovely place and they have a couple of fields you can book out for private hire. Is near the Cloud Farm site but this one you can actually book in advance. Isn't posh though :-)