Im not going to Leeds but Reading, but I volenteered by myself the first time, didnt know anyone when I turned up, made loads of friends spent the week with some people on my shift with similar music taste.
I had a fantastic weekend, everyone is really firendly, even those who came in groups, | even got a lift to the train station from someone I met. Its great fun I went back last year and am doing this year. If you have questions about doing it by yourself let me know