The Rock Box at Credit Union 1 Amphitheatre provides the VIP experience you’ve been dreaming of. As your favorite artists head on tour for the summer, you can now plan an unforgettable experience at Credit Union 1 Amphitheatre in a Live Nation Rock Box. There is nothing like enjoying live music out under the stars. Why not live like a true VIP and experience a concert under the stars in an exclusive Rock Box? Credit Union 1 Amphitheatre, formerly Hollywood Casino Amphitheater) is an outdoor music venue located in Tinley Park, Illinois, and is the largest outdoor music venue in the Chicago Area.