Hello,
We are setting an age limit on our wedding as we are having a very large wedding with most families having children. We have posted this on our website, and intend to address the invites to only those invited, but we are concerned that some will still miss the message. We are also concerned that those who are not given a plus one will not realize this and bring a guest anyway, and we are already struggling with keeping our guest list manageable due to our large families. Is it rude to include "invite only" and/or "Please, no children under 16" on the RSVP card anywhere?