Emperor Cruises Legacy Halong is a cruise company that sails Halong Bay on two-day, one-night or three-day, two-night itineraries. Meals on board include a Vietnamese seafood lunch, vegetarian and vegan options, and Western dishes in the evening. Cabins have large windows, wide beds and bathtubs, and onboard activities include a cooking class and karaoke night. Wi-Fi may not work throughout the trip, and the two-day, one-night itinerary is tightly scheduled, leaving little time to rest on the boat.