Explore the hidden treasures of Belize City from ancient Mayan ruins or a relaxing walk by the Caribbean blue waters all on your next Caribbean Cruise on Norwegian Cruise Line. Nov 9, 2017. Birders and holiday travelers will like this small-ship 12-day cruise of Belize and Guatemala. (Blount. Blount Small Ship Adventures is offering a 12-day cruise of Belize and Guatemala that will explore the countries' cays, reefs and lagoons….