LAS VEGAS, Nov. 13, 2012 /PRNewswire/ -- Green Key Global, the largest international certification body evaluating sustainable hotel operations, has awarded the prestigious "5 Green Keys" rating to four MGM Resorts International (NYSE: MGM) properties for its Green Key Meetings Program, including Bellagio Resort & Casino, ARIA Resort & Casino, Mandalay Bay Resort and MGM Grand Las Vegas. The four MGM resorts are the first in the United States to receive "5 Green Keys" for meetings, and among an elite group of only six total in North America. MGM Resorts remains one of the most productive meeting and convention destinations in the world, offering award-wining experiences throughout its three million square feet of meeting and convention space. In addition, each of the 11 MGM Resorts properties in Las Vegas as well as Reno and in Tunica and Biloxi, Mississippi and in Detroit, Michigan has taken substantial steps in their commitment to sustainability. "Green Advantage is MGM Resorts International's platform to ensure that environmentally-conscious decisions are at the forefront of our business operations and facilities. We are pleased to have earned the five-key distinction from Green Key Global, validating the significant efforts of our team to build a world class green meeting program," said Cindy Ortega, Senior Vice President & Chief Sustainability Officer. The designation of 5 Keys is awarded to hotels that exemplify the highest standards of environmental and social responsibility in relation to their meetings and convention facilities and practices. "Now, more than ever, the Meeting Planner community is seeking innovative, sustainable solutions when hosting their events," said Michael Dominguez, Senior Vice President of Sales for MGM Resorts International. "As this is an integral part of the meeting planner organization's objectives, we are extremely proud to be a solution provider meeting environmental expectations while still providing world-class, award-winning service," Dominguez added. Green Key Meetings is a comprehensive assessment tool for eco-friendly resorts and hotels that hold meetings of any size. It is designed to provide Travel, Meeting and Conference Planners with a sense of a hotel's level of commitment to environment issues. Overall, the Green Key Eco-Rating Program has more than 2,850 member hotels and is the foremost "green" ranking and audit program in North America. "As the first U.S. chain to introduce the Green Key Meetings Program to its portfolio, MGM Resorts has demonstrated that practicing environmental stewardship need not affect the quality of an event but can, in fact, enhance its success," said Tony Pollard, Managing Director of Green Key Global. "That these four Las Vegas properties have all achieved the highest rating is a testament to their dedication to sustainability within all aspects of their operations." Green Key Meetings ranks venues on a level of 1 to 5 keys, with 5 being the highest ranking. Keys are awarded based on how properties perform in six conference and meeting areas: Core Areas (carbon, energy, water, waste, air quality), Communication (information, training), Activities (purchasing, auditing, community), People (health), Exhibitions, and Audio/Visual. The Green Key Meetings properties and rankings are listed at www.greenkeyglobal.com/greenkeymeetings.asp. MGM Resorts' approach to sustainability focuses on five core areas - natural resources conservation, sustainable construction and renovation, waste management, sustainable supply chain and education and communication. This strategic framework of raising environmental awareness and promoting sustainability forms the company's sustainability platform, called Green Advantage. Green Advantage is fundamentally changing the way MGM Resorts, its properties and its 62,000 employees do business.