Fee: I charge £125 an hour and travel expenses (generally mileage, especially if I'm bringing my own kit) for weddings.
This fee also covers a meeting beforehand and correspondence about the music/tech.
If it's within Bristol area, a taxi to/from home will also need factoring in (as I can't take the kit on public transport safely).
If the event finishes after midnight and is further than an hour away, overnight accommodation will be necessary.