Ex needs to be supervised when seeing DC due to mental health issues and abusive behaviours (to both DC and me). The supervision is currently being done by inlaws, who I trust and are good grandparents when they're around, but who dont live locally and can only commit to ad-hoc visits to facilitate contact.
I understand that they have their own lives and are being put upon by having to suport ex's shitty parenting, but also don't feel like this is really my problem and want to be able to plan my weekends, knowing if I will have DC and not be at his beck and call.
My perspective is that I should make the DC available at set times (eg. 1st & 3rd Sunday each month), and it's his responsibility to arrange supervision at these time, be that inlaws, other family/friends or contact centre.
Inlaws perspective is that they are already doing a 'favour' by supervising at all, and they should be able to fit it around their other commitments. (No idea on ex's opinion, he doesn't respond to messages).
So would I be unreasonable to say the DC aren't available if they decide to come through on a non-contact weekend, and expect Ex to make alternative arrangements if they are not free on contact weekends. I am been made to feel like I'm being unreasonable, as this approach will probably result in EX seeing DC less often, when he inevitably fails to arrange supervision, but I really don't feel I am.