For us, 'twill be a bit of relaxation, and a bit of travel.
We'll wake up in the morning here so the kids can see what Christmas has brought and to have our holiday tradition of monkey bread for breakfast.
Then, before they've had a chance to get into any of their presents and such and amidst much complaining, we'll pile into the minivan and drive across the state to see Grandpa and his side of the family for Christmas dinner.
After we've stuffed and sated, and before the kids have had a chance to get into any of their presents, we'll pile in again and drive over to Grandma's for dinner, round 2.
Stuffing, satiation, and then piling again... for the trip back home.
With luck, I won't act on any black and evil thoughts that cross my mind throughout the day...