Bit of background: 2 DDs - 8 & 9, live in France (18 years), exh French. Divorced (French courts) for 5 years - he has every other weekend and 1/2 the hols - except that his mother took us both to court and so she now has first 4 days, he gets 2nd 4 days and I get final 8 days for all the two week holidays of 2014 (Feb/March, April/May and Oct/Nov). 2013 I got the second 4 days and he got the 8 days. We swop weeks on alternate years.
He is NC with his whole family. Abusive drinker - not daily but completely out of control once the first drop touches his lips (but that is a side issue for the moment).
Massively emotionally abusive man - I've only realised how much since I've discovered Mumsnet! He pays (by agreement) nothing at all towards the kids, except for food at his house. Nothing towards any of their activities, school fees etc.
He is like his mother - and she is just as manipulative as him, will of iron and stubborn to the point of folly.
We live as far from the mountains as you can get in France. Children have an opportunity to go skiing with local village group in Feb/March - but it is in the first week of hols, so on his and his mother time. Both have agreed to swop time, so they get my holiday time with the kids - tough for me, but in best interests of children, but the kids get to go. Only ex is insisting that his mother supplies a written statement that she agrees to it. She refuses because I asked and she wants it to come from him. Neither give a flying fuck if the children miss out as long as they win.
In less than two hours he is coming to pick up the girls for his week with them. What can I say to him to make his understand that if he wants the statement he is going to have to contact her himself- she has categorically refused to do it for me. That this is interest of the kids - I have absolutely nothing to gain. That he has a duty of care to the kids not a right to them.
OK and the other issue is that he has a very virulent temper and the girls will be leaving with him - if he is angry they will be on the receiving end. So whatever I say I really don't want to piss him off. I want to give him an argument that he can't beat. I'm happy to make it all his mothers fault (she certainly is't helping) if necessary.
No point telling me to not let the children go, this is France and the laws are not friendly in that respect. As long as he isn't actually beating the children up (and there would need to be independent witnesses) they have to go. I have been taken to court 3 times by him and once by his mother, so I really do know this to be fact.