how does transportation work when doing 3 nite land/4 day cruise?

[lindym]

HOw does the transportation work from airport to hotel and then hotel to pier and then back to airport? Do they still use the disney cruise buses or is part of it magical express? What about your luggage? Do you claim it or do they and what happens morning you ck out of your hotel room with your luggage and about what time do you go to the pier? Also is your same room key at Poly used for your cruise stateroom? Thanks in advance