Your job as a parent.
I'm writing this from a mom's perspective because well, I'm a mom. But I believe this is important for all parents. I hear horror stories of monster in laws often. I vowed to never be that, ever. I was lucky and my mother in law is the best! She's an ex mother in law now but I still think she is the best mother in law ever. I strive to be just as wonderful for my son and daughter in laws. With that said it's not always easy. When your adult children are in a serious relationship they gain a whole other family, one that becomes important to them. You may not see them every hoilday, you may have to celebrate their birthday on a day that isn't their actual birthday. All of this is okay, it will be okay. We do our best to raise respectful, idependant adults so when they become this we have to respect their decisions. Even if that decisions mean they are going on a birthday weekend trip with their spouses family. This is when I say things you don't want to hear