Do they have big sizes (plus size) for men?

I'm gonna say those kind of sizes will be limited to some of the more off styles. There's a corner in the back that has their clearance stuff...there should be something back there you could look at.

Most of the men's jeans go up to a 36 but they have 501s and 541s that go up to a 44. That's the biggest option in store.

Yes of course!!!

Yes

I didn't ask but I think so