My wife misplaced her iPad at CUN earlier this year. I described the situation and the outcomes here: HELP! Lost item at CUN airport . To summarize: The AC crew in CUN found the item on-board and put it in their local lost-and-found storage. We tracked it down with the help of Apple FindMy and of the AC agent, when checking in for the return flight at CUN about 5 days later. For the duration the AC official lost-and-found tracking system appeared completely oblivious of the fact that AC had the item in custody.