I strongly recommend a floral centrepiece for your ceremony.

While a beautiful back drop can be beautiful enough in itself, more often than not with professional photography its out of focus, so having something to frame the couple works much better photographically speaking. It gives context, and you can use the flowers for beautifully framed group photos after the ceremony as well.

Have your florist repurpose the flowers to the reception space so they don't go to waste and you'll always have the flowers in the photos to remember the day by.