wait!
I have a VERY important piece of advice that I wish someone had mentioned to me. Make a list, ahead of time (don't try to do it that day) of the pictures that you want to make sure your photographer gets. We didn't get nearly enough pictures of my DH's side of the family - and I regret that now. The photographer won't mind at all. A list something like,
1. groom, bride, flowergirl, ringbearer
2. ringbearer, flowergirl
3. groom, ringerbearer
4. bride, flowergirl
and so on. Also, pictures of certain aspects that are important to you. I know this sounds really geeky - but my photog did get a pic of just may hair and the tiara that I had in. I love that picture. That is one of very few that I loved though. For the amount of money we spent on him, I was so incredibly disappointed in the pictures he got. The whole wedding cost maybe $4000 total - $1200 of that was the photographer....that's how much importance I put into his "job."
Most importantly - smile. If you're not having a good time - fix whatever the problem is. Try to remember everything....it's your party!!
Congratulations & good luck!