Your title to this thread omits the word "folk". It's a pity the organisers didn't do that. I wouldn't have wasted my money and time coming here.
There are plenty of folk at the festival but folk music is obviously low priority. After two days at the event I am yet to actually see a performer through the ocean of standing audience. Yes, it is possible to hear them - over the loud converstions, family picnics, drinking parties, squeeking balloons, even a jam session (American Pie) on the grass outside Stage 1.

There were some useful tips in the mandolin workshop.

Cambridge and Warwick are opposite ends of the festival spectrum. I know which one I would go to for a second time!