If it were me, at this stage, I would probably try to keep it as simple as possible. I would just proceed with whatever plans and if he is there, he is there, if he is not, he is not.
I rented way to much space in my head to my ex for free. Frankly, I guess I still do as per my own thread about pain. A lot of that comes from me overthinking things.
Perhaps that is what is going on in your sitch. Hard for me to say. But again, looking back, I would have kept such situations simpler. Just focus on what is going right like the tick or treating with kids. And let happen what happens.
