I have been to a Castle Combe track day and although i enjoyed the circuit. The way it was organised was terrible.
Quite clearly it was more about making money than rider enjoyment.
Most track day organisers run 3 groups with 20 min sessions, the last and only time i have ever been to my local track, Castle Combe, they were running 7 groups and only 10 min sessions.
It's really frustrating waiting an hour for just 10 mins riding time.