Okay, so apparently our household has become an argument over etiquette. We are in the process of finalizing our invitation order--and I noticed he hadn't added a family he had mentioned he wanted to. During grad school, he helped support himself by tutoring a local high school kid; in doing so, he became close with his parents. He has continued to tutor the kid (and his siblings) long distance after he moved--and wants to invite the parents to our wedding. He also wants to invite the one kid he tutored the most. But not the others. I think if he invites one, he should invite them all. Your thoughts?