Elven Wedding Vows
We don't know what the actual wedding vows of the elves are, but we can guess. The Sindarin vows are for marriages in Middle-earth during the Second, Third, and Fourth Ages. The Quenya vows are for marriages in Valinor and Elves that are Noldorin or Vanyarin.
At Betrothal
Groom/Bride: I give you this silver ring with my love, and I promise to marry you. (The Groom/Bride give the other a silver ring. Then the other gives a silver ring, repeating the promise.)
The Sindarin Version: Le annon gorf gelebren hen a veleth nîn, a gweston le bestad.
The Quenya Version: Corma sina ar melmenya antanyel, ar vestalva vandanya núva.
At the Terminating of Betrothal
Groom/Bride: I return this ring to you; I will not marry you/there will be no marriage. (They give back their silver rings.)
The Sindarin Version: Le ad-annon gorf hen; le av-vestathon.
The Quenya Version: Corma sina enantanyel, lá vesta núva.
Groom and Bride together: We destroy the tokens of our love, and we will never marry. (They melt their silver rings.)
The Sindarin Version: Ú-echedim in naid meleth vîn, ar av-vestatham an-uir.
The Quenya Version: Ú-caruvalvë i tengwi melmelvo, ar lá vesta núva.
At Marriage
The Bride's Mother: May Varda watch over this marriage and protect it from the shadow of death. May _____ and _____ live and love together always in the will of Eru Ilúvatar.
The Sindarin Version: No Elbereth tiriatha vest hen a han beriatha dan i nguruthos. No _____ a(r) ______ cuiathar a melithar 'odref an-uir min innas Eru.
The Quenya Version: Nai Varda tiruva vestanna sina ar varyuvas i qualmë-lumbulello. Nai _____ ar _____ cuivuvantë ar melyuvantë oialë, óressë Eru Ilúvatareva.
The Groom's Father: May Manwë guard this marriage and shield it from the shadow of death. May ____ and _____ live and love together always in the will of Eru Ilúvatar.
The Sindarin Version: No Aran Einior tíratha vest hen a han beriatha dan i nguruthos. No _____ a(r) ______ cuiathar a melithar 'odref an-uir min innas Eru.
The Quenya Version: Nai Manwë tiruva vesta sina ar turmuvas i qualmë-lumbulello. Nai _____ ar _____ cuivuvantë ar melyuvantë oialë, óressë Eru Ilúvatareva.
Groom/Bride: I give you your silver ring and a gold ring with my eternal love, and I marry you. I name you "a new Lore Name". (The Groom/Bride gives the other the silver ring that the other gave during Betrothal along with a golden one. Then the other does the same, repeating the oath.)
The Sindarin Version: Le annon gorf gelebren lîn a gorf valthen a veleth uireb nîn, a le beston. Le eston _____.
The Quenya Version: Antanyel cormalya telpina ar corma malta ar melmenya vorima. Estanyel _____.
Ervellon and Gildor Inglorion did these Quenya translations.