JW Marriott Marquis Hotel Dubai has appointed three leaders across its marketing, recreation, and events departments. Karin Cohen has been appointed as Multi-Property Director of Marketing. She brings nearly two decades of experience in hospitality marketing, branding, and communications across Europe, the Middle East, Asia, and the USA. Liliane Vargas has been appointed as Director of Recreation & Lifestyle. She brings over 20 years of global experience in multi-site operations, innovative programming, and guest experience enhancement. Elie George Zgheib has been appointed as Director of Events Planning & Operations.