Hi ladies... question... I am ordering my invitations, and am wondering - do I really need to send RSVP cards? Should I maybe only send them to out of town guests? We already know who is mostly coming anyhow. And what is the etiquette for sending RSVP cards? Do I have to include an envelope with it for them to return it to me, or is it really that rude to expect them to find their own envelope to mail it back in?