^
So upon entering the exhibit, you'll be in this room:
The new animation plays with Dr. Chronos telling the Namie clone to go back in time to complete the "Final Space". It leads into seeing
Namie with the mirror dress from the promos and she'll walk off as you're welcomed into the "Final Space". This whole part is definitely pretty short. It lasts as long as like... the first 1/3 of "Dr." (the song) lol.
You'll then walk through this pulsating light tunnel to move onto the next area where you'll see Namie in her mirror dress swiping through all these digital boxes, going through her entire career via a montage of her music videos and tour clips. You'll see 14 year old Namie being interviewed all the way to the Finally Tour. At the very end, all the videos will absorb into Namie's mirror dress and she transforms into the white dress Namie who smiles and wishes that "music fill your wonderful life". It's basically a long extended version of the exhibit promo: