I used to arrange events for a living. They'd range from huge region-wide annual conferences for Aimhigher, through Holocaust Memorial Day lectures for my local university, and down to small-scale presentations for new projects. Even I'd draw in a sharp breath at the notion of taking on a wedding.
On the surface, it seems so simple. You book the venues for both ceremony and reception; book the necessary personnel - cleric, register, band, person who agreed to marry you; lay on some food and drink; send out the invitations; get married.
But there's so much more to it than that. Nothing can go wrong. It's the biggest day of your life. The pressure to make it perfect is generally the very thing that condemns it to imperfect from the outset.
More to the point, it's one of the few times in your life when your family, friends, work colleagues and assorted random people will all be in the same place at the same time. With alcohol. Clash of worlds doesn't cover it!
The last thing you need, as you take your vows, is to be worrying that something was forgotten amongst the crowd behind you. It's your great moment in the spotlight, but with a bit of appropriate wedding planning, you will be able to relax into your role. Then all that's really left to do is look into your loved one's eyes with a heartfelt, 'I do.'