Hi, just a few comments. Your zoom should do fine, as mentioned before. I use a 28-105 and I'm happy with that. One major suggestion, go to the rehearsal! This is huge! I have been doing weddings un-professionally for about 12 years or more, and I still go to the rehearsal. First, you can talk to the pastor/priest about their rules; second, you can know what is going to happen and when. Then there won't be any surprises. Sometimes the "kiss" is right after the rings, sometimes it's at the end, that's just one example. I missed the "kiss" at one wedding because it came before I expected it, and I wasn't at the rehearsal. You will also know if there is a Unity candle, flowers to mothers, etc. Make sure you have plenty of batteries. I use rechargeables and charge all of them the night before.

Another suggestion: RELAX!! If you like taking pictures and you do pretty decent, don't worry. Remember to come in close. Not physically,(but that's ok), but zoom in and get good close pictures. You will want some with the brides whole dress of course, but get some nice tight shots of their faces, like portraits. If you are going to pose the people for formal pictures, watch for little details. Straight ties, necklaces, where hands are, etc. If you have time, go to a local library and see if they have any good books on wedding photography. I found a lot of great information by doing that. It can also give you good ideas for posing people. If you plan on doing formal pictures between the wedding and reception, tell them to leave plenty of time. I like at least 1 or 1-1/2 hours. That's if your doing B&G, wedding party, parents, etc.

Have a great time and don't get too worked up over it. Trust your equipment and yourself, you'll do fine!