This doesn't sound anything like the superb event we went to last year in the football stadium.
There were no stalls there, and it was definitely almost all day, marching bands, displays from children all over the world, some incredible gymnasts etc etc and the seating areas were full to bursting, but because we were high up in a stadium we could see everything so well.
That wouldn't be possible in the new square.
Maybe there's 2 events?