We are doing our own invitations, and I just have a question with the reply card. I have the M _______ then under that I have two lines will attend, will not attend. Do the guests automatically know to write a number in there or do they just check which line? If they check the line, do I assume everyone invited is attending? Or do I add a line under will attend with number attending? Sorry for all the questions, I don't have much to go off for this since we always mail our reply cards back.