When you join a Boarding Group for Rise of the Resistance, you might note an estimated return time. Don’t trust it! I’ve ridden several times, and the time given has never been accurate. If you are in an early group, expect to be called sooner than the time given. Later groups could take longer, depending on how well the ride is running. Your best bet is to keep checking throughout the day, and make sure that you allow notifications on the My Disney Experience App.