Well, this is somewhere between funny and ridiculous.
There is one rule in Vegas that everyone obeys, all the time: NOTHING IS FOR FREE IN VEGAS.
There is nothing you do not pay in Vegas, not even a kids playground, no samplers, no snacks. There is no iron, no coffee maker on your hotel room unless you pay extra. Even if you take a picture with fake Elvis, you pay for it.
So now Liberty tells the poor casinos, that are of course obeying the "nothing is for free" rule and lifted the room price for the week by 100%, that the grand prix is not for free. Classic, might get interesting.