I doubt it would ever be up for public rental. One CM told me that if they did they would overload the circuits when they opened it up for calls. There is such cache to the place that it will remain a wonderful public relations tool for as long as they want it to. The CM said they can't even use it for Make a Wish because they do literally thousands of wish trips and they would have to dissapoint the kids.
The 567 rate is for tax claims, as a winner. Which is hilarious because one room at the GF in high season costs that much.