Sarah, this was years ago.
We booked into a pub CL at St. Teath - near Tintagel. It was only about half an acre, but there were already three 'vans on the site so we didn't have alot of choice for spaces. My brother also came with his van so we took up the two remaining spaces near the entrance.
We settled the children into bed, and after about quarter of an hour the CL started filling up with cars, using the site as an overspill of the pub car park!!! This was about 9.30 in the evening, we tried asking the owners of the cars to park somewhere else, but to no avail, they were'nt having it!!
In the end we got so sick of it, we stuck the children back in the car, hitched up, and spent the night in a layby up the road!! As I said, this was about twenty years ago, but from then on we have never used a CL that didn't come with recommendations or one that we have previously used.
Do'nt let it put you off Sarah, this was a one off, and hasn't ever happened since By the way, I don't think this site exists now!!