Most of the commentators say it's been the best tournament for fans in a long time, to be fair international football doesn't really seem to be full of chants and looking round the crowds they seem to be dotted here there and everywhere plus a block rather than all together
Except at the Brazil games, where it's been all yellow. And quiet. Maybe because they knew they'd win the group easily, they've been reserved and plan to turn it up a bit against Chile, who will actually have a sizable contingent in the stadium to help get the atmosphere going.