Roger de Coverly wrote:Chessbase are reporting the blue moon occurrence of a chess event being swamped by spectators wanting to watch live.
Blue moons are not particularly rare and the same could be said of the phenomenon which you mention.
At the Grand Chess Tour event in Paris last June, I arrived on the first day about fifteen minutes before the venue was open to the public. Long queues awaited me.
The theatre was pretty full for every round, with people standing at the back on occasions.
The capacity would have been several times the 100 quoted for the World Championship venue. The website for the Paris venue gives it as 854.