I actually can remeber my room number, but I still decorate my door. For this cruise, 18 days away, on the Legend I have a large yellow sun that "poofs" out. He's wearing dark shades.
My door decorations make me smile, and make a lot of people passing the cabin smile too!
I will admit that once my dear husband (dh) used the sun to lead him in the right direction after several cocktails. :0)