Invitations are designed and intended to impart information to people you wish would attend your wedding. More than anything, you want the invitation information to be clear and concise, and to get your guests where they need to be at the right time and to also notify the correct people you wish to invite. You want to make sure that the correct number of people are provided for at the ceremony and reception - so however you construct the invitations and RSVPs, do it in a way that is most helpful to you and everyone else.