Following Heald's response, a commenter humorously suggested a non-traditional way to meet other passengers. “An upside (down) pineapple on your door will do the trick!” they wrote.

A cruise fan has revealed the secret symbol that fellows passengers stick on their cabin doors to suggest they are a swinger ...

The website CruiseHive is reporting that Carnival Cruise Line is no longer allowing upside down pineapples as decorations for stateroom doors. While the pineapple ... by a couple that participates ...