The Mandarin Oriental Las Vegas currently carries a AAA 5-Diamond rating. I just checked and noticed that there are no Waldorf Astoria hotels in the world with that esteemed rating. I wonder if the new owner will push to keep that rating. Given that there are six other properties in Las Vegas with AAA 5-Diamond ratings, it might be smarter to trim the staff a bit and become a 4-Diamond property, like most of the other Waldorf Astoria properties in the US.