Looking at a similar scenario on an upcoming trip, with a twist:
We are transferring from BLT to Boardwalk. We plan to walk to Magic Kingdom that morning (after checking out on time), then drive over to Boardwalk late afternoon when the room there is ready.
We'll have a rental car, so easy enough to transport our luggage ourselves if we choose rather than rely on bell services to transfer, but obviously that won't work for any refrigerated or frozen items. Understanding they won't *transfer* our refrigerated items, will bell services at Bay Lake *store* our perishables during the day after we check out, for us to gather before we switch resorts?