MawB, the problem was that the invitation said to arrive at 2pm, which people did. Somebody had forgotten to allow fifteen minutes or so for the walk and settling in time. They had another wedding booked for later so couldn't wait to start the ceremony. It was a production line, a farm wedding (farm animals, farm smells, reception in large marquee with many wasps, etc. - quite a laugh!)
I've got another 'keen'... Ouch!