May the Holy One, Blessed be He, bless everyone of you, the grooms and the brides and all your families, with a unique blessing, in addition to the previous blessing.
A bride and groom who are about to start a Jewish family are entitled to a special blessing. The Talmud states: "When husband and wife are worthy, the Shechinah abides with them" (Sotah 17a).
May all the preparations for the wedding be blessed with success. The days preceding the wedding should be filled with increased enthusiasm and Chassidic warmth in Torah and mitzvos.
May the wedding and the seven days of festivity be blessed with boundless success, and so too, your future life in a manner of "going from strength to strength," in all aspects of holiness and thereby in all the blessings of G-d.
May you be blessed with an "everlasting abode" which will be "a meeting place for Sages," and may you be blessed with all your needs, children, life and health, and generous sustenance and all with abundance -- especially the fulfillment of: "Be fruitful and multiply, fill the earth and subdue it." (Bereishis 1:28) Which will speed the coming of our righteous Moshiach, speedily and truly in our days, when the promise will be fulfilled:
Again there shall be heard in this place, in the cities of Yehudah and in the [desolate] streets of Yerushalayim, the sound of joy and the sound of happiness, the sound of the bridegroom and the sound of the bride.... (Yeshayah 33:10-11)
Every wedding in the diaspora serves as a preparation for this promise of the future. We should increase those deeds which are propitious to speed up the redemption.
Increasing tzedakah, which is compared to all the mitzvos, will engender an increase in G-d's blessing; and "Tzedakah is great for it brings the redemption closer" (B. Basra 9a). Thus it is a good custom that the groom and bride should contribute to tzedakah on the wedding day, before the chupah. So too, the relatives who wish to add merit for the "everlasting abode."
My participation in this great joy will be to give a dollar bill to each of you, which you should give to charity on the day of the wedding.
May G-d grant that this joy will add joy to all of Israel, to the point of: "... songs and everlasting joy upon their heads ...," (Yeshayah 35:10) and we will merit to gather all the Jews, "Our youth and our elders, our sons and our daughters," to the time of the "marriage" of the Holy One Blessed be He and the Congregation of Israel. Before that, in exile, the Jews will have light.
May there be "light" for everything connected to the preparations, the wedding, the seven days of celebration, and all the following days, and may you live many, long, good and pleasant years.