It's a super beer festival, in lovely surroundings and with heaps of great and knowledgeable company.

Admissions vary - I understand that it's free to card-carrying CAMRA members. and on Saturday am it's £2.00, and free later on.
It's run by volunteers, taking four days, including setting up and dismantling, and they did this year a range of some 75 beers, all high gravity (5 to 10%), most unfamiliar and unusual. If you don't want to keep the souvenir glass you get the money back, and any unused beer tokens can be refunded or donated to CAMRA-DDS's sponsored charity. (Proceeds from the festival go to a charity or good cause each year.)
All power to local good events, and if they then bring benefit to to good causes and to local businesses too - brilliant!
(Edit - Oops, sorry Peter and Guzzler, I posted at the same time)