Due to DH's job, (army) we live in Northern Ireland. His children (DSS aged 13 and DSD agd 17) live in England. Currently, since living here DH has either visited the DSC in England, which involves him having to pay for a guest house and then having to take the DSC out all day each day he is there/sees them, and buying them lunch and dinner prior to returning them home. Obviously this works out expensive.
The other option if for DH to collect his children, fly over here with them, then fly home with them again when he returns them home. This obviously involves two return flights for DH and flighs for the DSC. Still expensive, but the less expensive of the two options, and it also mean she gets to see the DSC more as they are staying here, and I get to see them too. However, due to DH's work constraints it means he sees the children less than he'd like, due to the time taken to collect/return the DSC.
DH has tried to push for DSC Mum to allow them to fly over on their own, but their Mum so far will not allow them. She also says DH shoudl visit the DSC there as it is important for them to spend time alone with him. (in fact, she is generally very difficult and I suspect this is one reason she wll not allow them to fly alone). I can understand the children want so spend time alone with their Dad, and we always make sure he has some 'alone time' with them here, even if it is just a trip to the cinema or walking the dogs together.
I'll be honest, I am pretty fed up with his ex wife demanding he visits there, and feel it is not unreasonable to expect the DSC to stay here and husband not to visit them there, or at least only do so in exceptional circumstances. Not least as due to his job he sees his children little enough as it is and spends enough time away from home already.
Is it unreasonable to expect DSC to stay here when they see their Dad?