Zac Brown Band surprised more than 37,000 concertgoers at Boston's Fenway Park by giving every one of them a free cruise on Margaritaville at Sea. The giveaway happened during the country group's 15th consecutive sold-out show at the stadium on Aug. 2. The band made the announcement onstage, telling the crowd they were all being treated to a vacation at sea to celebrate the milestone. The cost of providing the trips was not disclosed. The gesture was part of a growing tradition of the band finding ways to thank its fans for their loyalty. The cruise line, Margaritaville at Sea, is known for its partnership with Jimmy Buffett's brand. The show itself was part of the band's ongoing tour, which has been playing to packed arenas and stadiums across the country. Fans who attended the Fenway Park concert received details about how to claim their cruise, though further specifics were not immediately provided. The surprise came as the band paused between songs, turning an already memorable evening into an extraordinary one for the thousands in attendance. The move underscored the band's reputation for going above and beyond for its audience, with the free cruises serving as a thank-you for helping them achieve 15 straight sellouts at one of baseball's most iconic venues.