I'd be wary about thinking of taking your van on and off the campsite during the week, regardless of the campsite you're on - I think everyone will be trying to avoid churning up damp ground, and it's been pretty common at the festivals which have gone ahead this summer for punters to be asked not to move their vehicles once on site.

There's certainly a late shuttle bus to and from the Bulverton that runs till at least the finish of the LNE, if you decide to go for the official campsite.