Having sailed around the world on many different ships, Marc Shoffman reveals his most memorable port stops after covering almost 30,000 nautical miles at sea Sign up to Simon Calder’s free travel email for expert advice and money-saving discounts Get Simon Calder’s Travel email Get Simon Calder’s Travel email Email * SIGN UP I would like to be emailed about offers, events and updates from The Independent. Read our Privacy notice E mbarking on a cruise holiday helps tick off an array of