Oh. Em. Eff. Gee.
We finished at about 5 am. (We didn't really get started playing until 8 or 9, and we had a break to feed babies in the middle.)
Don't get me wrong, it was fun, but LORDY! That's a lot of game. And even then, at the end, we basically rolled-over and handed it by acclamation to the player in the lead, rather than drag it out another round.
I would play it again. ...but not for a while.