Since you know that the airlines is not responsible, keeping pursuing the issue directly with Celebrity in Miami. Insist they check their port terminal everyday from which you emnbarked. Your luggage has probably been on more cruises than you have! It will most likely show up in the port terminal soon. If you need to place a claim, you must do it first with your homeowners's insurance then wait for settlement, then put it through your travel insurance (if applicable). Lots of work!