Hilton’s Waldorf Astoria luxury brand expects to plant its flag on the Strip when it takes over operation of the 392-room Mandarin Oriental at CityCenter in August. CityCenter Holdings, a subsidiary of MGM Resorts International, announced in April that it was selling the 47-story property and adjacent retail properties to an undisclosed buyer for $214 million. The Waldorf Astoria Las Vegas, as it will be known, is one of two non-gaming properties at CityCenter, but is adjacent to Aria and its casino. Waldorf Astoria Las Vegas will participate in Hilton Honors, the company’s guest-loyalty program for Hilton’s 14 brands. Hilton’s Waldorf Astoria luxury brand expects to plant its flag on the Strip when it takes over operation of the 392-room Mandarin Oriental at CityCenter in August.