Since we won't be seeing any crowds for a while, you might want to look back on the most recent one. A few snippets from the grandstand won't win any film awards but they can give some sense of what it was like on the day. There was definitely some snark about booking Katy Perry to play, but when she was up there, pregnant, belting out songs on her IWD stage, it was pretty great.
The first clip is a bit of Roar. Then you have:
A full view of the crowd waiting for the first ball.