When 37,000 people arrived at Fenway Park for a Zac Brown concert, little did they know that they would all walk away with a free cruise. Zac Brown Band achieved a remarkable milestone Sunday night when they held their record-breaking 15th straight sold-out performance at the crown jewel of baseball ballparks, Fenway Park. Zac Brown holds Fenway Park’s record for the most consecutive sold-out shows and the most tickets sold in its history. To celebrate the occasion, Zac Brown gifted everyone in attendance a free cruise on Margaritaville at Sea. The free cruises are valued at more than $40 million and it’s the largest audience gifting in live entertainment history.