Ah, I got it. I want to dump all my luggage; I will not have any carry-ons on the ship. I'm sending everything straight to the stateroom. I will have a small travel backpack, the same one I take on excursions, with personal items I'll keep. When I return to board the ship, I can go through security, bypass the check-in counter since I'll already have my stateroom key, and board the ship. This is exactly what I was hoping for.