Dear Disturbed: To answer your parenting question first -- it's hard to imagine a child expressing persistent and prurient curiosity about a necktie graphic on a hotel "do not disturb" sign.

I will never forget our stay in Dubai at an exclusive hotel – where the knocking on the door kept coming and coming, despite our putting out the “Do Not Disturb” sign when we wanted to work ...

Hotels across the country are making sure their “Do Not Disturb” signs are getting the point across with flair.No longer are the signs just plain printed black and white door hangers.