The Express Tram to the ARIA. The ARIA Express tram is a free three-stop tram with stops at Park MGM, Crystals retail and entertainment district (closest to ARIA/The Cosmopolitan), and Bellagio/Vdara Hotel & Spa. It makes it easy to get to ARIA, Bellagio, Vdara, The Cosmopolitan, Park MGM, and The Shops at Crystals.