Again, if Covid-19 has been mitigated by late May, there’s nothing to worry about. I still very much plan to travel to Japan.
The IOC did set a precedent by having the flame ceremony under “closed doors”. While the Flame Ceremony and Olympic Games are two very different things, the IOC did prove they’ll do what it takes to have an event go ahead on schedule. The IOC makes most of it’s money off broadcast rights. Having the games under closed doors would not hurt the IOC.
While Disneyland closing is shocking, they are only closed for two weeks currently.