Is there firewoods to buy near by?

Yes. You can buy firewoods. :)

Yes you can purchase wood from the park you can also purchase what it's seven or eight different houses in that area they have big signs in front of their houses in the wood right out next to the street you can also purchase it from the two gas stations in Port crane the fast track or the Kwik Fill

You can also buy wood at the park office.

Yes. A man has an honor system setup where you can buy a quart of wood but you need to leave the money in a box