The arena that hosted the 2017 "Billboard" Music Awards opened  on what date?
T-Mobile Arena T-Mobile Arena is a multi-use indoor arena on the Las Vegas Strip in Paradise, Nevada. Opened on April 6, 2016, the arena is a joint venture between MGM Resorts International and the Anschutz Entertainment Group.
Mobile Civic Center Mobile Civic Center (formerly Mobile Municipal Auditorium) is a multi-purpose arena located in Mobile, Alabama. Owned by the City of Mobile and operated by SMG, the arena comprises three venues: a theater, an expo hall, and an arena. It is suitable for large indoor events including sporting events and trade shows. The theater has seating for 1,940, while the expo hall can seat 3,000. The largest venue of the Mobile Civic Center is the arena, which can seat 10,112.