Can you stay year round?

Yes but negotiate a good rate if you know how long you're staying

I had a permanent site in the 700s for years . They do turn off the water in usually November and turn it back in March or April depending on the weather. So camping year round isn't exactly key

It is open year round for camping

Yes

Yes year around

They shut off the water at a certain time because the pipes would freeze so if you can stay which I'm not certain you'll have no water or showers or bathrooms

Yes but they do shut most of the bathrooms down in the winters

I believe you can