Reeling from the news that Parsifal III has a last-minute charter with the hardest preference sheet of the season, the crew try to enjoy their night off. A wild night leads to massive hangovers the next day as Chef Marcos struggles to create a savory but safe menu for the guests based on a complex list of dietary restrictions, plus a three-tiered gluten free wedding cake. Ashley sets her sights on proving to Daisy that she's ready to be promoted. Scarlett tries to determine if Gary has long-term potential after the charter ends. Pulling off a wedding is the crews biggest challenge yet as they pull out all the stops to end the season strong.