A disaster waiting to happen?

It’s now 17 days until the Tokyo Olympics:

“About 90,000 international athletes, support teams and journalists are expected to arrive in Japan ahead of the games… [along with] accommodation staff, drivers, media and over 110,000 volunteers who may come into contact with arriving participants.”

Just 25% of Japan’s population have had a first dose of a COVID-19 vaccine. What are the odds that this all goes horribly, horribly wrong?