If you're using the Kings Arms campsite, the down side is that their camping area is the main thoroughfare between the village with all the events and the official festival campsite, which is in the field behind. So you have a lot of people going past day & night.

I don't know what the Kings Arms costs but if you're staying the weekend a full all events festival pass and official camping for three nights only costs £36, which seems excellent value and you'll be helping the organizers raise enough money to put the event on again next year.