Sorry, another question about how to address an envelope (thank you note), but I just can't figure it out.
My half-sister is widowed but engaged. I got a wedding present from her, her fiance and her adult sons (he also has children). I've already written the note itself to Dear Sis, FI, Kid 1 and Kid 2. So how do I address the envelope?
Mrs. Sister, Mr. Fiance and family?
The Sister'sLastName Family?
Mrs. Sister, Mr. Fiance, Mr. Kid 1 and Mr. Kid 2?
She and I have the kind of relationship where this does matter, unfortunately, so I'm probably overthinking. Thanks for your help.