We checked into our stateroom, and I immediately noticed some costume jewelry in a cheap case between the nightstand and the bed. I didn't want to worry about it, and I didn't want to throw it away, so I tossed it under the bed.
Later in the cruise, our daughter was sick at 2 AM and we had to call to have the sheets changed (it was great that
DCL was there to take care of that at 2 AM). The spotted the costume jewelry, and set it on the nightstand. I tossed it back under the bed.
When we got home, we received a voice mail from DCL stating that we left some jewelry and could contact them to arrange for it's same return to us.
We didn't worry about returning the call.
So they seemed to be doing a pretty good job, at least in our room.