Well I'm still 4 months away from my wedding date, but this is relevant to me now. I sent out about 60 invitations 2 months ago (mostly to couples or guests +1). However, I've had an e-mail list and have been keeping prospective guests informed about the resort, costs, book-by dates for at least 4 months. My book-by date with the resort is January 8th. On our invitation info cards, and our e-mails, we've been telling people November 15th.. almost 2 months before the actual date to get people in gear and not waiting until the last second. Until a few days ago, I had 4 people booked... my parents and his parents. We sent an e-mail 2 days ago reminding people of the "deadline" which is happening in just a couple of days. We told people that this was our super formal RSVP, and even if they had mentioned yay or nay in the past, please super confirm again. We've had some issues with people not responding to our e-mails in the past. Maybe assuming we knew they were coming or just being undecided. Anyway, I got an e-mail from my travel agent today, and within 48 hours or reminding people of the deadline, we've gotten a ton of responses and 16 more confirmed bookings. Out of 60 sent invites: 18 confirmed bookings. 4 more people who are "definites." 5 more who have an 80% chance of coming, and a bunch who still have a couple of days to think things over. I'm expecting about 30 at the wedding. So far, only one guest is bringing a +1. I think we'll have a much better picture of things in 2 or 3 days when we hit that RSVP date and pseudo book-by date. I DEFINITELY recommend releasing an earlier RSVP/booking date!!