Sorry for the bad news. I am sure you will try your best. I agree with all that has been said. If you have a friend or someone else to work with, ask them to shoot at different angles than you. Or, get a bunch of disposable cameras and hand them out to some guests (not kids). You get the developing done at one place and that way you could cull what you want.

When I would do weddings, I would ask the couples if they wanted an album and how they pictured it would "read". Was it a story of the two of them or concentrating on all the guests? I would overshoot like crazy. You can always cull, but you cannot get back what you do not have. And have back up!

Great luck to you and Jim would be a great assistant!