V1olin's new life without wife

[v1olin]

Today is my Ex's weekend but I am taking the kids to an airshow today with my Mom. I got a text from ExW this morning asking when I was planning on picking them up. My ExFIL is here from out of town and I really don't want to have to see her or him today. Would it be a bad thing for me to tell her that I no longer feel comfortable around my EX in-laws? I don't want to be petty but I feel better if I don't have to pretend that it does not bother me.

I also pick up my kids from my MIL on my fridays. My EX W NEVER has to pick up her kids from her MIL. So, I am going to set a new boundary about that too.