I've come to the conclusion there are two sorts of bikers go to these things. One lot are older earnest blokes who probably worked as skilled engineers before they retired, doubtless smoked a pipe at some time in the past and spend their time trying to keep an unreliable pre 70's Brit bike on the road (probably at great expense). They are often there with their friend of many years.
The others are younger and do unpleasant things to, and with, foreign machines. These guys may be accompanied by women and children who may well also be bikers.
One group dines on the fast ........er......food available from the many vans and the other has sandwiches the wife made, kept fresh till dinnertime in tinfoil. I'll let you decide which is which. No stereotyping here then!
Oh and by the way dinnertime for us working classes is about 1.00pm