Every evening, a "Personal Navigator" brochure is left at your stateroom. This brochure is one of a Disney cruiser's most valuable possessions, because it is a detailed daily calendar of events for the following day, broken down in to relevant categories, with highlights, weather reports, fun facts, character appearances, facility hours, and more. While the paper navigator is handy, the app is even more useful.
I used the app to plan out my days on the ship; users can "favorite" events, plan their day, and even send messages to other app users on the ship. The app sends you event reminders 15 minutes ahead of time, and was something I came to depend on throughout the week for all my cruise ship information.