We aren't doing any extended family Thanksgiving or Christmas. It sucks. We didn't see my family for Christmas last year, because my dad was having knee replacement on 12/27, so they didn't want to host or travel, and 4 of us siblings are spread out. Since then they've seen their grandchildren once, in August, when we did a day trip and had a cookout.
By next summer it will have been about 19 months since they've seen them. When you are talking about small children, that's eons. My younger one had just turned 4, and will be nearly 6. But nobody is putting up a fight. You can't jam 12 people into a house for a 4 day weekend.