The problem with B&Bs -- which we used for Cropredy pre-kids -- is that somebody has to stay sober and drive. With camping you can just drink all night and then fall into your tent. Otherwise B&Bs are a brilliant option -- perhaps not for Glasto though because of the number of people. Hot baths, good breakfasts, cleanliness.

You do have to queue for some time to get out of the carpark at night. This was what inspired me to start taking a minidisc recorder to festivals, because it's loads more fun sitting in a car park for an hour if you're listening to recordings of the festival.