None of the various parts of our families is anywhere near as pushy as Sally, thankfully! My husband and I lived a state away from both our families for the first 8 years we were married. We both missed home, so didn't mind the 5 hour drive (each way) to spend both Thanksgiving and Christmas.
But after we had kids, that drive became close to 6 or 7 hours depending on how much we had to stop and how the weather was. We decided to take back Thanksgiving for ourselves, and were very happy. Now that we've moved back close to our families, and have two little ones (with a third on the way) we're already telling our parents that Christmas is going to be spent at home with our kids. We have a party with my mom's family on Christmas Eve, a party with my FIL's family on Christmas night, and one with MIL's family the weekend before Christmas.
This is the first year that our kids will wake up on Christmas morning in their own beds, at their own house. My husband and I both grew up spending the day with just our parent's and siblings. We want the same for our kids. Everyone is more than welcome to come and visit. We'll see how much PA backlash we get as the holidays get closer.