Download the USJ app before you go
With its throng of parades, performances, high-speed rides and 4D experiences, USJ draws enormous crowds every day of the year, which can often result in staggering wait times. You can keep track of how long the queue is for each attraction through the USJ app, which also offers updated information on show times, temporary ride closures and park operation hours.
The app will come in handy especially on busy days as you can use it to register your park admission tickets and obtain a digital timed-entry pass for certain attractions. The app will give you a time frame for when to show up at a specific attraction to cut down your wait time. Note that the number of timed entry passes you can get is limited.