This isn’t any ordinary holiday cruise. Board the Royal Caribbean International Mariner of the Seas and take to the high seas for a party unlike any other. The four-day electro music festival (November 20 – 23, 2015) takes place on the cruise liner itself, which sails from Singapore to Langkawi (for a private beach party) and back. Expect stellar performances by the likes of Kaskade, Ferry Corsten and Far East Movement while also getting the benefit of enjoying the ship’s incredible facilities, including 10 pools and whirlpools, 17 bars, clubs, lounges and even a duty-free shopping promenade. Rooms on board are selling out fast, so get booking.