How do you know when you're too old for a festival?

Or is it at a sleepless 6.30am in a tent at a music festival when everyone else is ‘up’ in more ways than one, while you fantasise about being winched to safety by a helicopter belonging to a luxury hotel?
A music festival is a singular occasion — a combination of a Scout trip, Debs and Battle of The Somme. They are eagerly anticipated in the preceding days at work. Microsoft Outlook messages that normally have subjects like “Urgent Reminder: Have you read the company’s email policies?” are used to exchange excited information about “Festival Banter” and “Can’t wait for the Carnage!!!”