Booked and paid for two tickets through WeChat for the first (10:30-12:30) slot on a weekday. Got there by taxi, and walked to the nearest metro station afterwards. There were a total of 6 other people in the queue, all wearing masks. Was sent two confirmation QR code tickets. I needed to have these electronic tickets scanned at the entry desk, and exchanged for electronic entry passes on my phone. Also needed to show valid green Shanghai health codes. Backpacks and water bottles had to go in a set of lockers.
You wander freely around the rooms - every corridor and room is part of the display. The animations and lighting effects are exceptionally good, and many respond directly to your presence - in particular, the butterfly room. In this one, just by standing in the room you create butterflies that spawn directly at your location, swarm across the floor and up onto the walls, then they slowly migrate through all the other rooms and displays.
Signage and information about the displays is available in Chinese and English. Scents are also used in some of the rooms, and backgound music plays through all the displays and rooms.
The Crystal Room (mirrors and multicolour LEDs) is particularly impressive and immersive, although it can be a little disorientating until you get used to it, and you may need to be careful with small children to prevent them walking into the LED strips. There is a pathway leading through the room - looking at the edges of the mirror tiles on the floor helped us see where we were going.