Im sorry, why do you keep calling it his base? It is now his home.
I appricate this is all new, and that he probably walked out over another woman and your hurt. And i appricate that you want to protect your children.
And he was totally and utterly wrong to introduce a new partner without your KNOWLEDGE, i dont think he necessarily needed your concent but yes it would have been polite to say you have the kids more than me so are likely to be picking up the pieces so is it ok with you, also that would have been the time to express the concerns and work around them together, although your tone seems to indicate youd havr said no.
No you cant demand to know what jes doing and although i can have a little bit of understsnding in terms of yes it might help so that you can "sell" the breaks to them as in "ohh i hear daddys going to take you to this .... wont that be exciting" but you cant demand you know and you definately can not refuse to let them go if he doesnt tell you.and again your tone indicates you wouldnt be giving them pisotive reinforcement anout the trip any way. You cant expect him to bring them home, maybe you can ask him to let them call you if their missing you.
Sorry term time you are being unreasonable, youve let him see the kids in the house, the place thats no longer his home. I dont know maybe gour hours is a long way, my dads used to be an hour, but honestly hes their father, its his home, im of the oppinion that children of seperated children should see both parents homes as theirs. I certianly did and my godchildren do. Which is why im being fussy about you calling it his base because it indermines that its his home.
I agree with Pp contact is yours to sort out, its going to mean compromses on both sides. If you cant the courts will, and tnh you think the children are unsettled now dont put them through the court process.
I guess your so ridgid in your views and demands because he isnt compromising either, it feels like hes issuing you with how its going to be but fightimg that with this sort of angry reactiveness isnt good