A three-hour wait to enter the U.S. exhibit. A snaking line at a hot dog stand. A dozen people lingering outside the Austrian pavilion ¡ª which was already at capacity ¡ª just for the opportunity to enter the line.

Mere months ago, the prevailing narrative around the Osaka Expo was that the event was on track to be a box office bomb amid low public interest and slower-than-expected ticket sales.

Now, two months after the expo¡¯s gates opened on Osaka¡¯s Yumeshima island, organizers have a different problem on their hands: how to improve the guest experience despite swelling attendance figures.