A marriage is contracted by the exchange of two sets of spoken legal vows. The first set of vows are when you declare that you are free to marry and the second when you take each other as partners in marriage. Each of you will repeat the vows after the Celebrant Registrar. The running order of a marriage ceremony can be found here.
Unlike a marriage ceremony there are no legally required spoken vows. Instead, each person must read a legal declaration and sign the civil partnership schedule. This declaration can be spoken out loud to one another if preferred. The running order of a civil partnership ceremony can be found here.