Zac Brown Band surprised all 37,000 fans at their Fenway Park concert in Boston on Sunday night by giving each attendee a free cruise for two, marking the band's 15th sold-out show at the venue. Frontman Zac Brown made the announcement before performing "Same Boat," calling it "the biggest giveaway in history." The gesture, delivered in partnership with Margaritaville at Sea, was framed as a way of thanking fans who have supported the band throughout its career.

The trips, redeemable on select Margaritaville at Sea sailings over the next year, are collectively valued at more than $40 million, according to a press release. The cruise line's CEO, Christopher Ivy, said the company was proud to help bring the surprise to life. The giveaway comes as Zac Brown Band tours behind their eighth studio album, Love & Fear, released in December, with the Love & Fear Tour continuing through November, including stops at Red Rocks and Forest Hills Stadium.