If the parking is in the field behind the church which it usually is then you wont get bogged down in the field. I've parked there in all weathers for the last 10 years at least and the only place it gets trickey is a little bit muddy at the entrance after a day of heavy rain when the odd car sometimes needs a helping shove. The field has a very shallow top soil on top of rubble and stone which keeps it well drained. (I used to dig the latrines trench every July for Bingley Harriers triple T event!!!!!!)