Perhaps I should post this on the "Etiquette" board but I really only post here mostly.
I just had a friend, who RSVP'd for my wedding with FI for her and her husband, tell me that her husband wouldn't come. I'm a little hurt that he doesn't want to come, as I've known the couple for a long time and he could come if he wanted to. She felt bad about it, appologized and I told her it wasn't a big deal.
Of course, with a week and a few days out, seating charts have already been made, placecards printed, meals/linens/flowers/favors/etc. paid for but, in the end, I'm happy my friend is able to come. It got me to thinking that this might happen with a few other people...what did you do (will you do) with no-shows? If they don't let you know or apologize for not coming, did you say anything to them? I think its more about feeling hurt if someone can come to your wedding but chooses not to (i.e., isn't sick, no emergency, etc.) vs the money.