Ok, I understand that it is rude to post this on your invites, websites etc, but why exactly? We all know some people on our guest list that even though we address it just to them, try to add their children on to the RSVP card...so why is it in bad taste to say that the reception is adult only? I've gotten invites before with that on it and I've never given it a second thought. I'm not planning on putting this on my invites, I'm just curious as to why it's such a big faux pas.