My son has a child arrangement order for his daughter . She lives solely with my son and sees her mother twice a week for a couple of hours. No overnights with her mother. My son wants to take his daughter on holiday for a week. The court order states he must let his ex wife know about his plans 24 days before the holiday. Could his exwife potentially stop the holiday? They are in England and my son is thinking of taking his daughter to Spain for a week.