Due Date Dont's
1) Don't make the RSVP Due date 2 months after you send out the wedding invitation. Your guests will put the RSVP aside and many will forget to sent it back.
2) Don't forget to include a stamp and write your address on the RSVP envelope.This not only is proper etiquette but it encourages your guests to return the RSVP cards.
It's fun getting all your RSVP cards back in the mail. It's one of the few times in your life you'll enjoy checking the mail. Consider binding all your RSVP cards into a book form.