Visiting the children in my house

[Coachella]

So ex said he wants to come round and see the children in my house if he's nearby? But I don't believe it's only gonna be when he's nearby.
I think he will find it easier to just see them here than take them out, he lives 20 mins away.
I just don't want to see him that often, AIBU?
Does anyone else let their ex do this?

I did it for a while and it's was just uncomfortable for me personally.

I’d hate that!
So his contact will be whenever he happens to be nearby he’ll drop in? You’ll constantly be on edge waiting for him to turn up.

No, I wouldn’t agree to that. Set days and times obviously with flexibility on both sides and he takes them away.

I wouldn't agree to that. You'll be always wondering if the knock on the door is him. It's nice that he's close and can potentially see them a lot, but try and arrange in advance.

My ex tried to do this until I put my foot down. The kids usually went off the play in their bedrooms while he sat watching TV. But the main issue for me was that he didn't understand that it wasn't his home and he had no longer had any eating rights to food in the fridge.