Cruise secrets: The ‘curious phenomenon’ on-board a cruise ship – you’ll never guess

He has dubbed alcohol consumption, and excessive drinking in particular, as a “curious phenomenon”.

In his new book, The Truth About Cruise Ships, he said: “Excessive alcohol consumption is a curious phenomenon on board cruise ships.

“Booze is often part of any type of vacation but a cruise vacation conjures up visions of fruity umbrella drinks and fun wine with dinner.

“Social settings often include alcohol and a cruise ship, packed with 2,000 other vacationers is one of the most social environment’s you can be in.

“Time on board was limited and to get their money’s worth, passengers gained a collective six tonnes as they maximised their food intake.”