Just checking I didn't make a huge mistake. Our RSVP cards only have the option of posting - No email address or phone number. We are sending a self addressed stamped envelope with the invites and RSVP's, so all they have to do is write who is coming and pop it in a post box.
Is this OK, or should I have given more options? I figure most people have our numbers, and those who don't have my mums number, so they can contact this way if they really prefer to.