We were at the dollar store picking up our cheap ponchos, when my oldest daughter saw those Gel-type window clings. They are really cute, with a tropical theme, and she asked, "Can we use these on our door?" I told her, "I don't know. I don't think so." So she said, "Ask the people on the board!" LOL! She is sharp! So, can we use those? They don't leave sticky residue like tape does, and they aren't permanent, and the only time we've had trouble peeling them off was if we left them on too long over the summer time. This is an eight-night cruise, and I'm guessing they would peel right off with no problem. What do you all think? Maybe the admin can answer this one? I don't recall seeing gel clings in the "do not stick this to your door" FAQ section, but maybe I just skipped over it somehow.