Our RSVP by date was September 30th. I've finished the seating diagram and most of the placecards. My mom just called and told me that a couple called today and wanted to RSVP (10 days late, wedding is also 10 days from today).
Now, we made an honest effort to contact them when we didn't get an RSVP. They never answered their phone, and their answering machine was full, and we never reached them.
I'm not being over-dramatic when I say that their addition will literally have me rethinking half my seating chart. My tables were FULL, just these two has pushed me to needing to add another table, and now I have split up a bunch of groups to redistribute everyone. I suppose it could be done, but it took me hours to get this right and it will take me all night to fix it. I also have to redo a bunch of placecards.
Would I be terribly rude if I called and explained to them that I'm sorry, I cannot accommodate them with such late notice? I have an icky feeling about it... like, I sent the invite, so I should honor it. But at the same time I don't think it is fair that I should be held hostage to late RSVPs in terms of completing the planning I need to do to properly host everyone else who was on time.
BTW, today was literally the deadline to submit my final numbers for meal choices to the venue. So ... technically ....