Can I put Black Tie Optional on the reception card in my invite for a Friday night wedding? My groomsmen will be in tuxedos as will some of my guests I am sure (the "more important ones" like my godfather, close cousins and uncles, etc). My venue is very elegant and I want to make sure people are dressed in at least a suit- they do not by any means need to rent a tux but I want to make sure people are in proper attire for my venue even though its a Friday night. I am mostly worried about my FI family that is not from the area we are getting married in. They are used to more casual weddings and I have made mention of how fancy/formal/over the top NY/NJ weddings are to my FMIL but not sure if that will get the point across to everyone else. But I dont want to sound snobby since its a Friday night wedding which I know is usually less formal.