
I used to put on Exemption shows in Stanton (10 years of them) and the EASBTC do an annual fun day, usual procedure is to write to the Parish council, explain what, when and fundraising for *** and ask for permission to use the Recreation ground.
Our PC used to charge Gt Barton club for use for their obedience show which was profit for the club but never charged us or the EASBTC as it was fundraising for a charity.
Otherwise do you or the choir know a friendly farmer with a field going free. :-D