Yes we've done it for the past few years but decided to give it a miss this year.
Its a nice location, and 2016 they had Dr Busker and a real ale tent in the evening but last year they cancelled the whole evening entertainment at the last minute
so we went on a road run off site which "apparently" didnt go down very well with them ? This year I note they dont mention anything for the evening.
Not a huge area to play in and you can end up camping on quite a slope, they are also quite keen on the H&S front wanting Risk Assessments etc for all engines, not that anyone ever checked ours