It's important to have each of your professional vendors on the same page for your wedding ceremony. Somethings to talk about:
Make sure each Pro has a copy of the ceremony. They will be well informed of the layout of the ceremony and any ques that may make their work a bit easier.
Talk to your videographer, DJ, musicians and photographer about where they can place equipment, where they can stand or move to. It's important that your Pro's know what you would like. Talk to your photographer about being discreet - not coming past the first row to take pictures and not being intrusive of your ceremony. Talk to your videographer about where he will place any recording devices; make sure they are out of the way of the photographers shots and that they follow the same guidelines of not being intrusive or not coming past the front row of seats as well. It's also important to talk to your DJ or musicians on where they will place their equipment or set up to play. Will the DJ provide a microphone to use; if so, is it on a stand or handheld or lavaliere? What do you prefer? If it's on a stand that mic will be in all of your photos.
I know what your thinking, "they are the Pro's, shouldn't they know this stuff?" Well, yes but each Pro and each venue are different...and each couple is different. Addressing these items will open a conversation to allow you to have the best ceremony for you!
Know that if you hire me, I do my best to talk to each Pro on site the day of your wedding. I will ask each Pro to abide by the front row rule (unless you want something other) i will also make sure they are aware of ques and general information that will allow each of us to work to our best potential and to create a wedding ceremony that is as close to perfection as possible.