Will my national park pass work?

Yes

Yes and if you have a military park pass it will work as well

Yes you can go online and see where they work. You will be pleased

They work in more places than you expect if access pass. Definitely at any N monument or NP. Forest Service. BLM. Oregon and others have programs but you have to get registered.

Yes. For a full list of what your pass will include, visit https://www.usparkpass.com/list-of-us-parks.

Yes. I used mine last month there.

I believe so