We assume English as the wedding-language of most of our couples. But if the actual languages spoken by the bride's and groom's families are different, why not arrange for a bilingual wedding ceremony? For the sake of family members and guests, a couple may ask their celebrant to have parts of their nuptials in their different languages. If your priest has difficulty with this, you could at least consider printing the BOOKLET for your wedding ceremony in both languages.
The essentials of the Catholic marriage ceremony are provided here in:
Irish . . . .
French . . . .
German . . . .
Italian . . . .
Spanish . . . . Polish . . . . Portuguese.
Our course has a priest available to celebrate in English, Irish, French, Spanish, German or Italian