I have DIY pocket fold invites, and only planned on using an outer envelope. We are allowing single people to have a +1. I was looking up how to address invitations without an inner envelope, and etiquette says to not include "and guest" on an outer envelope.
For the ladies that had/are having pocket fold invites, are you using inner and outer envelopes still? If not, how are you addressing them to indicate the guest can bring a +1?