This might have been me. I didn't loose any documents and no husband but when I disembarked a few cruises ago, I accidentally took someone else's luggage (looked like mine) and only discovered it after I had called Uber. I quickly cancelled Uber and asked the RCI agent outside the terminal if I could go back in and retrieve my luggage. The answer was a plain and simple NO. Okay then, I asked him if HE could do it and again the answer was a resounding NO.
To make a long story short, I had to wait outside in the Miami heat until the last passenger disembarked and only then did Border Patrol / Customs allow the RCI agent in to get my luggage and return the luggage I accidentally took. This was 3 hours later. The takeaway I got from this experience is that going forward I always take my luggage with me when disembarking and never put it outside my cabin the night before!!!