we've had that happen on other orders and it is a true bummer. But, just like they forgot about Easter, so did you. I have tried to have a calendar that has dates and holidays on it closer to the computer nowdays because of that. That way, when I'm talking to the ordering folks I can say, "what does having (whatever holiday) during production make?" When I do this, they are like, "Uh, wow, let me see. hold on." I think it is so funny.
But is just doesn't occur to most folks and we just have so suck it up most times.
Casita is a great place and I've not heard anyone complain about using it strait out of the yard. A few folks have had wild stories of fording streams, flooding, hail, and such and they came out fine with nothing wrong. I imagine that's what you will find so get out your Yoga book and practice awhile, think positive thoughts and bring balloons to celebrate your new baby when you arrive where you're going!
IT WILL BE WONDERFUL. I promise!