Fully agree, why would someone stoop so low to steal FE and magnets, but they do.
Personalised items do reduce the risk, names, stateroom number, it makes it less useable. IE I out our stateroom number on, my Nagnets and was able to find them on another deck, - maybe some people just think, I paid for the cruise, I can help myself.
I agree, do they really need to steal items? No.
Also in concierge on the Magic/Wonder, some like to play knock down ginger, on the door bells. It can be any time day or night. They will come up, ring the bell and run off. Quite annoying if your having a nap. I have at times, heard people st our front door, talking low, so look through the peep eyehole, see cruisers there, ( not just kids, but adults) door bell goes off, thry run off.
99% of cruisers are nice and respectful, but there are the few, who , think thry can do what they like.