With a more experienced supplier you are paying for their knowledge, as well as their connections. It is invaluable if your celebrant has a connection with your videographer or photographer. That way those people already know how the celebrant works, where they place the bride and groom during the ceremony and how they conduct a ceremony. Experience as a celebrant is invaluable, I have had crazy situations crop up in my weddings. Like the time the rings were forgotten, or the time the father of the bride left his jacket in the car and they were an hour late. You want a celebrant who can navigate those situations with ease and confidence. All in all an experienced supplier will help ease your nerves on your most important day!