I've been with Shelter last couple of years. Going with Oxfam this year as last year was horrendous. A shift on Friday evening and Sunday evening, in a really busy bar where we didn't get a proper break and the avalon staff were vile to volunteers. The year before was better so not saying its that bad every year, but dependent on what bar you end up in prepare for the worst. Then its impossible to sleep in the campsite next to Block 9 even with ear plugs.