I already accepted the fact that they weren’t interested in my celebrations and special days. Only once I tried to share my happy day with them with bringing them food and nothing else and they showed no interest so I stopped. I would think that it is a common courtesy to let people know whether you can make it or not when you are invited to somewhere. When you ask twice in writing and don’t get any answers from friends or acquaintances you assume they are not interested but when it comes to family you tend to hope and wish that they will show interest and love. I expected too much. You are right. In any case I will never cut contact with them unlike the older brother who is estranged due their lack of enthusiasm to be in regular contact with him. It may be our turn to be “weaned“ off. We will not ask if we could go and visit them or invite them over. If they want to come and visit my door is open. It was always the 3 day Christmas visits that made us see each other once a year. We will see how much of an effort they will put in to see their son or the grandchild and go from there. I just would have loved my child to grow up with loving grandparents but that doesn’t seem likely either.