My fianc and I have discussed this and due to the poor relationship between my parents and I, and between my fianc and my parents, they will not be invited to our wedding. I will be asking my grandfather to walk me down the aisle, and if he is not available or comfortable, my brother in law who I am very close to. How do I go about letting them know they are not allowed to attend? Please don't be negative about my decision, I really am just not sure how to tell them they can't come.