The app is bogged down by inter-related features that synchronize poorly & are buggy. If you try to book lightning lane reservations on a park Hopper day, it is impossible to get the app to see that you are at a different park, despite having to scan in to the next park. Also, if you unlock your hotel door with the app, your magic band won't work to open the door anymore. The app tries to do too much and fails at a lot of it. The one thing it does well every time is take payment.