Yeh, I just want to expand on what Soundgod said.
Disney’s Magical Express is the free round-trip transportation between Orlando International Airport and your Disney owned-and-operated resort.
The transportation service between your Disney owned-and-operated resort (plus Swan/Dolphin) and the port for a Disney cruise is provided by Disney Cruise Line. It is NOT Disney’s Magical Express, and more importantly it is NOT free, it is not included in your resort rate or your cruise rate, you pay additional for it.
I just want to make sure you know the difference so you don’t call one about the other. The confusing part is that for both services, the supply of buses and drivers are supplied by the same company, Mears Transportation, but the administration/management of them is separate.