My wife gave detailed itineraries to the bridal party and family members, showing them where to meet after the ceremony. We were going to take pictures at the Cathedral of Learning in Pittsburgh, a few blocks from St. Paul’s where we got married.

When it came time, it was likely herding cattle. Everyone took off in different directions, itinerary in hand. They kept coming to us asking where to go

There is a big benefit to running through the ceremony, and providing time for everyone to ask questions. And if using a DJ during the ceremony, make sure they are there.

A few weddings ago, one of the readers was extremely shy and froze-up during rehearsals. She felt so bad and started crying instantly. Her dad stepped in and did the reading. I’m glad that didn’t happen during the actual ceremony.

Another wedding, the bride wanted the entire bridal party song to finish before she made her entrance. Unfortunately, this led to over two minutes where nothing was happening. Guests became confused and it was awkward as they wondered where the bride was. If we had rehearsed the night before, we could have convinced the bride to modify the plan.

During a rehearsal, I can even ensure the mics sound better. People are made of 70% water, and water absorbs radio waves. If the bridal party is planning to stand between my equipment and the officiant who’s wired up, microphone drop outs can happen. It’s much easier to move people during a rehearsal than it is on wedding day.

There are many more reasons, but you get the idea. Do a rehearsal, invite the DJ if needed, and make sure all the details are discussed.