Only ETonline has a behind the scenes look at the duo's recent #ThisIsHowWeCruise outing, where they set sail with more than 2,400 of their biggest fans through Nassau and the Bahamas. Among the highlights: fans with beer bongs, a belly flop contest and some rockin' dance moves (go ahead and skip to the 02:13 mark for that treat).
So what song is he busting a move to? That's anyone guess, but there were plenty of great acts to groove with on the ship including Nelly, Thomas Rhett, Cole Swindell, Maggie Rose and, obviously, the men of the hour -- Brian Kelly and Tyler Hubbard.
This video was shot by the duo's close friend and personal videographer Justin Mrusek, so you know he had unprecedented access to all the action! See the best highlights above.
Were you on-board with FGL? Hit the comments with your favorite moments and join the conversation online using #ETnow!
The band's new album, Anything Goes, is out now. They'll hit the road on their worldwide tour beginning Jan. 15 in Toledo, Ohio.