How safe is it for the younger festival goers?
Again- the appropriate answer would be how safe is it around your local area? How safe is the U.K. in general?
99% of the people at Reading Festival are out to havea good time - they are welcoming, nice, polite and there to enjoy themselves. First time festival goers may find the first night intimidating (noise) but they'll soon adapt, knowing everyone there is just up for a good time.
Anyone young MUST NOT be left alone. We can't stress this enough.