The short-lived attempt to institute a reservations system for visiting some of the major pavilions was abolished recently; it just wasn’t working.
The Organizing Committee decided to abolish its pavilion reservation system, considering continued discontent among visitors. They suffered inconveniences, since 8 pavilions were often crowded with too many visitors and reservation was completed in an instant.
The “First Come First Served System” will be applied to visitors as they tour pavilions, starting from May 28.
If you had a reservation under the old system, it is still valid.
I can attest that the system wasn’t working. I had a reservation to the Theme Pavilion, but I didn’t even try to get in because of the huge lines that didn’t seem to be moving, but kept getting longer and longer, with quite a few unhappy faces. Let’s hope the “first come, first serve” way works better.