This week Chef Robert is in Ketchikan, Alaska, where he comes face to face with his largest challenge: a 2900 passenger cruise ship! The ship is docked at port for the day and Robert's mission is to create a light buffet of hors d'oeuvres for a sail away party that will take place in 7 ? hours! To top it off, the kitchen is 8 decks away from the serving area! Will Robert be able to cook full steam ahead? Or is this Dinner Impossible?