Hello: I need some input from my fellow 'The Knot' brides (whether it's 'to-be' or 'have been')... My fiance' and I originally were supposed to be married this past June 8th, 2013. The Tuesday before, I was informed by our venue a financial issue hadn't been 'resolved' and unless we came up with the full amount that day, we would have no choice but to either cancel or rebook at a later date. Needless to say, I was a basket case. Fortunately, my boss let me go home after 1/2 a day to try and figure this out. After many calls, etc., it was ending up becoming a no-go 4 days before our big day. Quick fast forward today, our new date is going to be October 5, 2013 and my question is 'how or what do I send out to our guests to let them know date change, venue, etc? I don't want to have to re-do the invitations completely but what is the etiquette for this? I realize that some of our 'not coming' RSVP's from before could be changed to 'coming' due to the date change so I'm having trouble figuring out...do I send out new RSVP cards that perforate off of a small, new invitation or is there another alternative? I certainly don't want to do any mass internet notifications (sounds super-tactless). Any thoughts?