I know this topic has been beaten to death on these boards, but I wanted to get a more recent response. My Fiance and I have decided to have an "adult-only" wedding. I am struggling with how to inform our guests of this. I know people have said that it is tacky to write it on the invitation, but what about on response cards or on the wedding website? I plan to address the envelope to only those invited, but am concerned that people may just open the envelope and not pay attention to whom the envelope is specifically addressed to. Has anyone found one technique to work better over another. HELP please!