Another thing of note - the dominant sound right around the track were the cheers of small people shouting "Go Daddy!"
I got my share at the peanut-gallery end of the course, but in B-grade at least, I always seemed to be riding near a lot of guys called "Daddy" whose support crews were scattered around the track.
Also lots of slightly larger small people collecting Hi-5s from as many passing competitors as they could reach. Some better placed than others
... but I reckon they all would have had very sore hands by the end. At least we had gloves on.
Family friendly cycle racing at its finest. It's not all death masks and drunken koalas.