80% ROI Projected due to the fact that Al Marjan Island is set to become home to the very first casino in the UAE and the GCC region. Al Marjan Island has become one of the most promising areas in the UAE, thanks to the comprehensive development of the region in terms of both business and tourism. The UAE’s first casino will be built at the Wynn. The resort is expected to attract more than 5 million tourists per year, which will lead to an increase in prices for buying and renting property.