Tacky for some, fun for others
On our last cruise on Carnival this past October, we went for my birthday. We decorated the door and it was really fun. To some it may be tacky, for us it wasn't. It did make it lots easier when looking for our room. One of our port days, someone stole part of the decorations (a paper 'ole guitar - yes really!). Not only did we decorate our door, we took the small yeard flags and bung-ged them across the back of chairs on the balcony. That made it really easy to see our cabin location from the dock. Do it, it's vacation and have a ball. Don't worry about what others think - it's YOUR vacation!