S/O - Does your ex's family still consider YOU to be a part of the family?
My ex's sister and her husband/son do not. However several of his cousins, his brother and his grandmother, aunt & uncle, do consider me to be a part of the family and often invite me to gatherings. I rarely go because I'm uncomfortable, but I'm grateful, especially for the sake of my kids.
Over the summer the kids and I spent 3 days at ex's grandmother's house. She wouldn't let me get a hotel but insisted I stay at the house.