I believe there is a fair bit of stress photographing a wedding (it's a once-off event that if you screw up you stand a chance of losing future business), made

I believe there is a fair bit of stress photographing a wedding (it's a once-off event that if you screw up you stand a chance of losing future business), made worse because unlike many other shoots, the photographer doesn't have as much control over the proceedings (although the last wedding I was at seemed more like a photo shoot than a wedding in some ways, with the proceedings waiting for the photographers!).