A couple of things this doesn't mention are adults only dining like Palo or Remy (on the Fantasy and the Dream) and gratuities. Gratuities are optional and collected at the end of your voyage. There are suggested amounts that Disney publishes but again, they're optional and at your discretion.
What's included in the basic price of a Disney cruise?
Your vacation package price includes almost everything on board—from your stateroom to breakfast, lunch and dinner every day, along with soft drinks served at meals and at the beverage station on Deck 9, and snacks and ice cream throughout the ship. All onboard activities and entertainment are included. While you're sailing, there are only a few things that will require an additional charge: port adventures, spa or salon visits, phone calls, photos, video games, Internet usage and all alcoholic beverages.