Anonymous wrote:They're not nasty, they adore your kids, and they include you in activities.
It's not them. It's you. Go ahead and stay home because they likely won't miss you.
OP, voice of experience here. Your ILs are 3/3. Mine are 1/3, on a great day. The annual vacation is referred to as the week from hell (or "WFH", see prior sentence). Every year, I agonize over pleasing my DH. DH knows I love him, no matter what. But I tell you, if I do *not* attend "WFH", DH loves me even more; and wonders how he ended up with someone so opposite this clannish clan of ingrates. So, it is a win/win really. Even the kids hate it.
In your case, with a loving, warm supportive set of ILs? All I have to say is, will they adopt DH and me and our DC? Because our DC are greatly missing a decent local family. We have made our own, and they know they are loved, but they really genuinely feel "WHY???" each time about this year. If I were you, I would go. Just some perspective.