Well, if the courts push the issue, then your have would have to give you ample notice of trips, i.e., dates and where they will be staying. He shouldn't be allowed to just up and take them w/o your knowing the particulars in case of an emergency.
It is very difficult to prove that someone is unfit or not completely all there. If he does get over night custody, suggest that a social worker or someone visit them periodically, unannounced to ensure that they are being well taken care of.
Because your children are older, the court may ask them what they want to do, i.e., take their responses into consideration.
Just my two cents today.
Sit quietly, the answers will reveal themselves when you least expect them to. The past is gone, the present is a gift and you need to focus on today, allow the future to reveal itself when it is ready.
