My invites include the invite and RSVP card and return envelope. There is no inner envelope for the invite itself. Therefore, guests names will be on the outer mailing envelope.
This is not a problem for the Mr and Mrs or the names of couples I know by name but we have about 3 people we are inviting who are w/o a SO. We are giving them Plus ones. Can I just put Joe Smith and Guest on the outer mailing envelope? Is that acceptable? What other ideas do y'all have?