Very poor functionality, crashed multiple times throughout the day, wouldn't load the map if you were anything less than full bars. Wasn't very useful either even when it was working. Also, the Genie+ subscription that let's you use the lightning lanes for $30 a person is not worth it at all. Doesn't work on the attractions that actually have long waits. You will get to redeem it twice, maybe 3 times over the full day to cut 20-30 minute lines, IF you plan your day around the time slots.