Why do people number rsvp cards?
This is actually a very smart practice. Before you send out your invitations you create a list of all your invited guests with a corresponding number. This number can be written lightly in pencil on the back of the rsvp card in very small print. In the case that one of your wedding guests forgets to fill their name on the rsvp card (it does happen!) you will have a back up plan to determine the absent-minded guest.
