Minor Japan sidebar: The new National Stadium's max capacity is a little short of 68k, probably less once camera positions and such are added, so if NYNJ, Doha (88,000) and Moscow (78,000) are the standards, the JFA is going to have to find at least 10-12k seats *somewhere* if they want 2046.
Dan Orlowitz
FIFA has just confirmed the official capacities for the World Cup venues.
Toronto: 43,036
Vancouver: 52,497
Mexico City with the largest attendance at 80,824.