Green Key member properties are listed at www.greenkeyglobal.com, a valuable resource for environmentally conscious travelers. Green Key rankings are recognized by major travel services including AAA, Travelocity and Expedia."MGM Resorts has been a highly engaged Green Key partner since the program was introduced in the United States," said Tony Pollard, Managing Director of Green Key Global. "It is clear from how each property performed on the updated Green Key self-assessment that MGM Resorts is committed to continuous improvement in its sustainable operations, not simply content to rest on its laurels." Under the leadership of MGM Resorts Chief Sustainability Officer Cindy Ortega and the Company's sustainability division, the Company continues to expand its best practices to use resources more efficiently, reduce construction impact, minimize waste, manage supply chains and increase awareness. "The enhanced designation reflects that our standards and best practices in environmental sustainability remain consistent throughout the company and continue to be improved. This further solidifies our commitment and responsibility to improving our environmental impact," said Ortega. In 2009, ARIA Resort & Casino was awarded LEED Gold certification for sustainable design and construction from the U.S. Green Building Council. In 2011, MGM Resorts was awarded 12 Green Key Hotel rankings for designation of green business operations. In 2012, Green Key Global's Meetings Program awarded the "5 Green Keys" rating to the meetings and convention spaces within Bellagio, ARIA, Mandalay Bay and MGM Grand Las Vegas. For the past three years, MGM Resorts has been listed among Newsweek Magazine's 500 most environmentally responsible companies in the United States. For more information about MGM Resorts International's commitment to sustainability, please visit: http://www.mgmresorts.com/offers/2012/07_annualcorporatesocialresponsibilityreport/index.html About Green Key GlobalGreen Key Global is a leading environmental certification body offering a suite of programs and resources designed specifically for the lodging industry. In the United States, delivery of Green Key programs is a joint venture between the Hotel Association of Canada and LRA Worldwide, Inc. For more information, visit www.GreenKeyGlobal.com. About MGM Resorts InternationalMGM Resorts International (NYSE: MGM) is one of the world's leading global hospitality companies, operating destination resort brands including Bellagio, MGM Grand, Mandalay Bay and The Mirage. The Company also owns 51% of MGM China Holdings Limited, which owns the MGM Macau resort and casino and is in the process of developing a gaming resort in Cotai, and 50% of CityCenter in Las Vegas, which features ARIA resort and casino. For more information about MGM Resorts International, visit the Company's website at www.mgmresorts.com.