The Glastonbury Music Festival at the end of June may be the biggest summer music festival in the UK but it isn't the only one. In fact, there are more than 300 summer music festivals in the UK and Ireland - opportunities to get down, get dirty (literally) and get it on, in muddy fields, on sandy beaches, in city parks or in grassy meadows all over the place. They are huge, excessive and full of opportunities for brilliant fun if you come prepared and avoid the pitfalls. These top survival tips will help.