Lock Up volunteer - I've been doing every year it's been on since I was 25...and I'm 41 this year. Wild.
We can get on site from the Sunday, and have the benefit of a short stay car pass made available to us which is an absolute godsend for driving onsite with all your kit. Way back when we camped on Tom's Field, which then moved to Paines. Past two years we've been shifted further out each time and this year it was Rivermead/Pylon. A couple of times we've had shower tokens, but this year it was as many as you liked, with zero queues. The dream! The compost loo's were excellent as well. I think this was due to us being next to security, who had their own showers etc in their compound.
We used to get meal tickets but these stopped years ago. However one of the peace orgs who also provide a lock up offer a pay in advance meal situation, whereby you pay a daily rate and get breakfast/lunch/dinner. This is based in our wee area only. I didn't use it so can't speak to how good it was, but it looked great!
Shift patterns - we start work on Wednesday, and some unlucky rota's have a Monday AM shift. It's 4 hours at a time and runs as such 8am-12pm, 12-4, 4-8, 8-12 and then one night is an 8 hour nightshift from 12 till 8am. So you do work every day. Depending where you are, it can be REALLY busy but it makes the shift fly past. You are also looking after peoples valuables, so really need to be on the ball.
It's a brilliant gig and all donations go towards excellent organisations. Every year I say it's my last....and then I'm booking annual leave a few weeks later.