Guests planning ahead for their 2021 and 2022 holiday can now book one of Emerald Waterways’ vibrant Southeast Asia itineraries on the majestic Mekong River, travelling through Vietnam and Cambodia on the stylish, Emerald Harmony. To accompany the 2021 & 2022 Vietnam, Cambodia & Mekong River Cruising brochure launch, Emerald Waterways is offering guests that…