I don't think Christmas is about celebrating the belief that Jesus is God and Son of God. I think Christmas is about celebrating the Virgin Birth of Jesus, which I believe in. I think the whole world should celebrate this event. I would phone my parents and tell them that I was coming to celebrate Christmas with them with their grandchildren and Muslim spouse. I would also tell them to prepare the turkey without splashing any wine on it. It will not only bring joy to your parent but will also give true insight of Islam to your children.
Merry Christmas.
AK Sayed (South Africa).