I cut and pasted this from another source, but it’s pretty helpful:
10 ways a bride and groom can help with the production of their wedding film.
1. Warn us of upcoming events. Cake cutting, garter/bouqet, toasts, special dances. Just a small, 5-minute warning can help us confirm that we are in the right place and the right time. Let your DJ know that he needs to make sure all your vendors are prepared for what is about to happen.
2. The Toasts. Tell your best man/maid of honor to not only talk about you as a person, but also as you both as a couple. Have them share their thoughts on you two finding each other and getting married.
3. Turn down the radio/ipod during prep. It’s common for the girls to blast a wedding mix album while doing hair and make-up, but this can easily mask a power piece of dialog that can be used to tell your story. It also creates an awkward background noise when a cinematic soundtrack is applied later.
4. Have a first look. Your photographer will tell you the same thing. Seeing each other before the ceremony helps you with your nerves and creates a wonderful opportunity for you two to say just say “hi”. We also view this as a opportunity to capture you two alone together which is actually a rarity, believe it or not, on your wedding day.
5. Tell your wedding party & parents that we’re coming. Make sure they understand that we desire that everyone behaves naturally and let them know that they need to try and ignore our presence as much as possible. We want your day to unfold the same whether we are there or not.
6. Exchange gifts. Add a special moment to your day by giving each other gifts. You can have a bridesmaid/groomsmen deliver it or exchange them during your first look. It’s always fun to see how we can tie this sequence into your film.
7. Talk. Have conversations with your family and friends. Chat about how you meet, how the proposal went, what has gone into planning this wedding, etc. Your wedding day is packed full of emotions, let everyone know how you’re feeling.
8. Don’t chew gum. We know you’re nervous and feel the need to be busy, but please refrain from the Juicy Fruit. This goes for the wedding party too.
9. Stay together. It’s not uncommon for the bride and groom to split up once the reception is underway. Grooms, get out there and dance with your new wife! Your wedding day is finally here, enjoy it together.
10. Consider your vows. When it comes time to state your vows to each other remember to relax. Take a deep breath and look into one another’s eyes and deliver your words from the heart. Slow down and think about what you are saying.