Are there mandatory bag check or coat check policies? I freeze and I don't want to part with my coat.

Yes. As you go into the Event Center, your bags are checked, body scan & pat down. No problem

I kept my coat on.

You can keep your coat with you..

I agree. No mandatory coat check

You have to go through a security checkpoint but there isn't a mandatory coat check. At least not the last time I was there.