I saw the no spectators thing, and then did wonder if they would bother at all. At this late stage, the cost of cancelling would be huge, I imagine- but I have been a bit baffled that something on the scale of the Olympics was going ahead anyway.
The opening ceremony would be strange without spectators - and I can't imagine the usual procession of all the athletes, mingling.
It's a huge shame for all the athletes involved.