Ceremony Options for Marriage
The Catholic Church provides three different forms of celebrating the Rite of Marriage. When two Catholics (or Christians) are marrying, the celebration will normally take place within a Mass. The second form, which does not include a Mass, is used when a Catholic marries another baptized Christian. A third form, also outside Mass, is usually celebrated when a Catholic marries someone who is not baptized. The second and third forms are structured around the celebration of the Liturgy of the Word.
For further information, check out Ceremony Options on ForYourMarriage.org.