Our babe was due on December 21 last year. As soon as we found out, I immediately told both of our families that we would not be making any Christmas plans at all. I didn't want the stress of committing to plans (that would be an hour drive away from our home). Seriously, I wouldn't go if I were. You. Is about you this time, not them. You did good leaving it up to your husband if he wants to go or stay.
Our babe came 9 days early on 12/12/12, but I took a LONG time to recover, down there, and we barely did anything at Christmas, and it was just fine. There's no way in heck I'd be walking around an amusement park, that's for sure!