to say no to this trip

[lowercase]

xp is both inconsistent and unreliable wrt DS (3.5)
in fact, i can RELY on him to be unreliable.
around half the time we arrange something there is a problem, cancelling and lateness.

today he calls to inform me, after no contact for 9 days (but one text saying 'not coming, got work') that they are going to cornwall with friends, 4 hours drive, this weekend.

he has history of neglecting to use car seat (in 'friends' cars)

i dont think he is prudent enough, ds said daddy lost him their last outing, which he admitted, but said ds ran off for a few minutes.

i have said that i dont want him to go, apparently i am raising a mummys boy.

am i being unreasonable to say no to this trip?

Bump, sorry.

I would have told him its to short notice and you have plans. He can't just decide to go away and go without giving notice.

He doesn't sound responsible or reliable at all. I would tell him you've planned other stuff or say you think DS may be coming down with something so, sorry not this time.

If he has parental responsibility do you legally have grounds to refuse him?

Saying DS may be ill is not refusing is it? Sounds like he'd run a mile if he had extra work. (assumptions again)