Given that Glastonbury sells out instantly before any performers are announced is testament to its enduring appeal.
It is perfectly possible to attend, and not go near the main areas - there are sixty-five individual performance areas on the site, which is the size of the city of Bath.
I don't see the appeal of festivals, although I go in a professional capacity, I am off to Glastonbury tonight, but I am in a hotel and have access to press toilets, so I avoid the worse issues of the weekend.