I'm getting ready to send out my Save the Dates and I'm not sure if I need to add the "and Guest". Both times I recieved a STD I was already with my now fiance, so they had added his name. The people who will be receiving the "and Guest" don't have a SO right now, so I can't put specific names. I know technically I don't have to give these people a guest, but I want them to be comfortable the day of the wedding since they are non-family members.