So this seems like a silly question, but I've been reading the etiquette of properly addressing invitations for so long that my eyes are crossed and I just want to make sure all my t's are crossed and i's are dotted (literally, too).
One of our good couple friends are a married couple who live separately, he is based in GA with the air force and she is here in NC (works with my FI). He is deploying next month and won't be here for our May wedding (sad face, but so thankful for him and the other military doing what they do for us...) Anyway, we've talked about the wedding with them, he's expressed regrets that he won't be there, knows he'd be invited otherwise, etc. so...when I address the invitation do I address it to "Mr. and Mrs. John Jones" at the wife's address here close to us? Do I address it to just her at her address? Do I send them each one separately at their own addresses?
Also I want to tell her she can bring another of her friends to the wedding with her if she wants, since the group of friends that we hang out with that they're a part of is all couples and I don't want her to feel like a 3rd wheel or that she doesn't have anyone to dance with, should I address the inner envelope to Mr. John Jones, Mrs. Jane Jones, and guest? Or just tell her she can bring someone else in place of her husband?