A close friend lives with her parents, sister, and grandmother. I am planning on inviting her whole family plus her and her sister's boyfriends. In total there are 7 people at the same address I am inviting: 3 couples plus the grandmother. I think I read you only need to send one invite for each household but I feel like tracking everyone down to rsvp with their meal options on one card might be difficult. It might also look really weird on the envelope with so many names.Do I send out 4 separate invites? Or just send out one and have my friend take the lead in tracking everyone down to rsvp with their meal choice and send the card back? What's the best way to approach this? Thanks!