The biggest and most import information I will need, your song request form. This is a list of songs you absolutely want to make sure I have, and any songs you defiantly want to make sure I don't play.
This does not have to be extremely exhaustive. I will take the songs you must have, and make a play list from that. The more I know what you want, the more I can make sure I will have what you like. If I have internet I have access to 8.5+ million songs, but I can't always count that the internet will work. I bring about 65,000+/- with me. Usually I can cover what you want with what I have, but I do try to do requests... even on the reclusive song that is really special to a single individual.
This is needed, so I have the songs for your First, and Family Dances as well as the names of those involved in the wedding. I do have default songs for these portions of the wedding if this form is not filled out.