Shanghai Disneyland introduced Standby Pass with The Many Adventures of Winnie the Pooh attraction and described it as the following:
A Disney Standby Pass is an online reservation tool launched by Shanghai Disney Resort to help guests better plan their queuing schedule for a more relaxed park experience. For attractions where the Disney Standby Pass is applicable, the corresponding attractions are only open to guests who hold either a Disney Standby Pass or Disney Premier Access for the corresponding time period. You can pick up a Disney Standby Pass — available on the Shanghai Disney Resort Official App for no extra charge and subject to availability, so you can wait in line for the attraction within your selected time frame.
Disney Standby Passes will be released in the App on an hourly basis, based on that day’s official park operating hours. Each Disney Standby Pass corresponds to a 60-minute interval for the guest to arrive at the Disney Standby Pass entrance. The quota for each day is limited and will be allocated on a first-come, first-served basis. The final release of Disney Standby Passes is approximately two hours before the park’s announced closing time.
Standby Pass was eventually available for the following attractions:
Buzz Lightyear Planet Rescue
Challenge Trails at Camp Discovery
Peter Pan’s Flight
Seven Dwarfs Mine Train
Soaring Over the Horizon
The Many Adventures of Winnie the Pooh
TRON Lightcycle Power Run
It is now only available for The Many Adventures of Winnie the Pooh, Peter Pan’s Flight, Roaring Rapids, and TRON Lightcycle Power Run. Guests must have a Standby Pass for these attractions between 12:00 PM and 5:00 PM on most days. It seems Shanghai Disneyland is beginning to phase out the system as the risk of COVID-19 decreases in China.