Here is a rough sample of matrimonial prayers according to the ge’ez rite. There are several errors in the print that cause me to stumble, and some I take my liberties with, but overall I am thankful to the good folks who put this effort in to translate something for us. Any oaths should be removed. Oaths are against the Orthodox Church, and more importantly, the holy scriptures which God gave us through her (his bride).
Enjoy. And prepare for your big day.