STBXH is being an utter twatbag. Hideous divorce, massive betrayal, deceit a decade long, financial and emotional abuse - you get the picture.
He sees young (primary school age) DC EOW. We now have an annual plan in place. Days and times are always the same (thanks lovely MNetters) to avoid any of his fuckwittery.
Shitbag rarely (if ever) corresponds with me, the frustration of which has been hugely helped by my construction of annual plan, however he has just messaged to say "am busy with work this Friday so can you drop DC @7.30pm not 3.30."
Obvs I too have work commitments which I manage, and always have done when it comes to my DC. His lack of ability to participate in any logistical / practical / emotional / medical / hands-on parenting was a major factor in divorce. DC are shattered on a Friday so this will mean a late night. This doesn't suit them.
AIBU to say "no"? And suggest he arranges for someone else - his DM for example - to avail herself to maintain normalcy / routine? Or not even suggest anything - just make him work it out himself like I have for the past 8.5yrs??
I know it's a tricky one as it's the DC. And they shouldn't be made to suffer for his incompetence.