Guests can only get a boarding group through the Disneyland App and not at kiosks inside the park.
Thousands of guests have flooded the park’s entrance every morning (some as early as 4:00 am) in order to get a chance to ride.
These boarding passes sell out in only a minute or less, so you need to be on your phone with the Disneyland app ready to go.
The Disneyland version often sells completely out of passes within the first 1-2 minutes of park opening, which means late-comers are not riding.