If that stack on top is open to the flame then probably not considered approved. It has to be a solid top. If that stack is solid, then you should be good.
Some how how, I think they frown on fire pits of any type IN the cabins.
Outside at the cabin sites though, I believe they are allowed as long as it conforms to the guidelines of the types and not that close to the cabins themselves.
As far as "Renting" them, I have never heard of this being done. That's not to say it's not available... Just haven't heard of it.