The main traditions are:
Ketubah - document that expresses the couple's wedding promises to one another
Chuppah - wedding canopy beneath which the ceremony takes place
Exchange of rings - includes couple's brief expression of their love and commitment
Seven blessings - traditional or alternative good wishes for the couple and their future
Breaking the glass - celebratory conclusion of the wedding ceremony
The length of the ceremony depends on the couple's choices and is usually about half an hour.
The amount of Hebrew depends on the couple's choices. Anything I say in Hebrew, I translate or introduce first in English. At the weddings I officiate, non-Jewish guests consistently tell me that they appreciate how inclusive the ceremony is and how well they understand each of its elements.
I offer Jewish and interfaith couples the same choices for their wedding ceremony, so the differences depend more on the couple than on whether or not they are interfaith. Some couples also choose to include elements of other cultural and faith traditions.
Their reasons vary from what is allowed within their branch of Judaism, to concern that children of interfatih couples are less likely to identify as Jews, to a belief that a Jewish wedding only accurately represents a couple in which both people are Jews.
I officiate weddings on Saturday evenings at 5:00pm or later, on Sundays, and on weekdays. I have occasionally pushed back the beginning time on Saturdays when needed to allow time after the wedding for dinner/ dancing/ etc. My bottom line for weddings is that they are honest, respectful, joyful, and inclusive, and that the couple and I plan the ceremony together so it is deeply meaningful for them and their guests.
I regularly hold online meetings with couples who live out of town or prefer meeting online.