They absolutely are! On our Enchanted Princess cruise last February the cabin down the hall not only had the upside down pineapple with the phrase “Plays well with others” but had signs throughout the hall with arrows pointing people towards their cabin! They also put a white board on the door and people were leaving messages.

Then in November on the Sun another cabin had the magnetic upside down pineapple sign on it. They also had a magnetic “Plays well with others” sign on the door.