Has anyone else had people tell them they'll come to the ceremony, but are unsure if they will come to the reception? I had eight people (a family with grown children) RSVP, only to tell me they'll decide the day of if they feel like "staying out late" for my reception (which ends at 8:30, so it's not late at all). Any advice on how to deal with this? It would be a huge deal for them to all back out and would cost me a lot of money and make my seating chart all wonky.