My FI and I recently got engaged and my mom very graciously offered to throw our engagement party in September. It's a BBQ/campout party so that our friends don't drink and drive home. The problem is that she sent out the invitations with the date of 9/11, rain date of 9/18 and just called me tonight in panic mode because at the time we planned it, we were just looking at "second Saturday rain date third Saturday in September." Only today as she was putting it on her calendar did she realize 9/11 was the day she planned it. OBVIOUSLY it's in HORRIBLY poor taste to throw the party that day, but as it was an honest mistake I'm not mad at her about it. The question I have is, since we already mailed out the invitations is it acceptable to call each person and say that we're pushing the date back a week? A whole bunch of people have already RSVP'd yes and some have even SPECIFICALLY taken off work to come! I don't want to inconvenience people further, but I also don't want anyone under the impression that I think that day is a day to throw a party! No one that has RSVP'd yet has said anything about the date to us, and approximately 25 people have RSVP'd.
I don't need anyone saying negative things about my mom or me for not realizing, so if that is what you want to post then don't post at all. It was an honest accident. I just want to know your opinions: would it be really rude to ask those that have RSVP'd to rework their schedules again or should we just leave the date as planned since so far no one seems upset about it (besides me).