To call Wilderness a music festival is to undersell it. Yes, there are stages with music, but that is hardly the focus. Wilderness is set in a country estate about 100 kilometres from London. Most people camp for the weekend event so a small city pops up in the expansive fields and the woods around them. And throughout it all are more activities than you could possibly fit into the few days available. In one corner is a crafts section, with people making leather belts, jewellery,...