Marriage Second Witness

My fiancée and I are getting married this Friday in Moorhead. While my mother is able to attend, my grandmother (who was our second witness) is no longer fit to fly and cannot attend.

I don't really have any friends in the area and was hoping someone would be willing to be our second witness? It's a short courthouse ceremony in the morning.

I'm buying lunch after for anyone who would be kind enough to help us out :)

Thank you.