I will be at the BWI for 4 nights before switching to the Poly next month. We are splitting the stay due to a desire to be close to both EPCOT/DHS and MK. As I see it, worse that can happen is we get moved to another upper Deluxe - all of which are fine with me. Only issue I would have is if they move us to a lower Deluxe like WL or AKL.