I'm all up for new ideas for venues - seems like the done thing to think outside of the box doesnt it when it comes to hosting your reception. Have a look over at Ben Selway's site -
http://www.benselwayphotography.co.uk/cornwall-wedding-photography/weddings-at-griggs-st-austell/
http://www.benselwayphotography.co.uk/cornwall-wedding-photography/weddings-at-griggs-st-austell/