Third Eye Blind will be the inaugural concert on July 5 in the Hard Rock at the Etess Arena (formerly the Mark G. Stressing that Hard Rock “is an entertainment facility, not just a casino,” Allen also announced some of the 300 acts already booked in Atlantic City. The hotel and casino are owned by the Seminole Indian tribe of Florida. Allen, chairman of Hard Rock International and chief executive officer of Seminole Gaming, officially announced a June 28 opening. Hard Rock Atlantic City via Instagram week nearly all casino news focused on Hard Rock Hotel & Casino Atlantic City.