When Royal Caribbean launched Icon of the Seas last January, it introduced a new era of family cruise vacations.

Miami’s stripey pink and yellow beach parasols dwindled as our ship sailed into the sunset, and the lifeguards’ huts shrank to colourful confetti specks on the sand. A deep-water kayaker gave us a ...

With Celebrity Cruises asking the public to design its newest ship, here are a few pointers – and some mistakes to avoid ...