I've done a few now (family & friends) and I'm gaining a reputation as a last port of call for desperate mothers alarmed that their children haven't booked a proper photographer. Maybe it's the crowd I hang around with, but no one I know has gone for the 'fairytale' wedding that costs over £15,000; they're always either registry office then pub or really eccentric. I like shooting the latter more. I don't get paid, but I do get to eat some nice food and meet interesting people.
I use two FM2 bodies, one with a 50, one with a 24. I use Fuji 400H and have a Vivitar 283 which I bounce off the registry office ceiling if I'm forced to shoot indoors. I send the films to a pro lab for 6x4 proofs and usually there's no reprint requests (the couple usually don't care about photos and the relatives are using a flat bed scanner). I hand print one or two nice photos myself. I normally shoot four rolls of film, so 144 photos.