And the ship was blessed with the surprise appearance of one particular "dude guy" in the shape of prince of dubstep, Skrillex.
A surprise guest was scheduled for after Justice's headline set and Skrillex popped his undercut head up from under the decks to hit the crowd with a set of his trademark frantic blend of dubstep and electro.
Elsewhere on Holy Ship!!, Major Lazer kicked off proceedings as the boat left port and several sightings of men dowsing themselves with Coors Light in hot tubs were reported. Normal cruise liner service then.
Boys Noize, Diplo, Skream and Benga and Knife Party have all played Holy Ship!! across the weekend.