I have sole physical custody and joint legal custody of my kids. My Divorce states that neither the children nor the domicile of the children shall be removed more than 100 miles from the children's legal residence except in compliance with Secion 11 of the "Child Custody Act of 1970." I read Section 11 and it does not pertain to vacations. I want to take them out of state for a vacation. Do I need their Dad's approval to do so?