Correct me if I'm wrong, but isn't it bad etiquette to not send back an RSVP card even if you are not attending? The cut-off date for my RSVPs to be in is in three days and 2/3 of my guests have not responded one way or the other. I included a response envelope and a stamp in the invitation. Some people that I have asked have said that they are planning on coming and just keep forgetting to send it back. Besides just needing to know if they are coming, I also need to know their meal choice which is also on the RSVP card. I don't want to guess and needlessly pay for a bunch of extra meals but I also don't have time and don't want to call 200 people to ask if they are coming or not. Is this a common problem and is it just me or are these people being horribly rude?