Hi girls,
We sent out our save-the-date cards about 6 months before the wedding and quite a few people on the guest list have already said they can't make it to Hawaii. Quick question - is it necessary to follow up with sending a formal invitation to people who have already rsvp'ed "no"?
I was originally planning to, but since there are some folks who have zero possibility of coming, I kinda thought about saving the postage and paper.

Is this bad etiquette? Thks!