A comment by Manotea in the London Orbital tread below make me think the topic of helping at events is worthy of discussion here.
Until recently, I was responsible for LWL and was constantly reminded that the event and its popularity was only possible because of the over 30 people who put their hands up and gave their time to make it all happen.
I was about to say "selflessly" gave their time but I think we should celebrate the fun and enjoyment that can be had helping out on an event - I recommend that everyone does something every year if they can just because it's a blast.
At a control you get to catch up with a regiment of people you know from a ride you have done in the past - but probably never see because they're normally well ahead of you or miles back on the road. People are almost universally delighted to see you (not a regular experience in my life!) and there's a real pleasure in watching a knackered AUK come back to life after drinking stewed tea and eating a ton of cherry bakewells.
On LWL, feeding riders and hearing their stories at the end of 407km was always reward enough for the stress of running the event (even when I'd heard some of the same stories a few times before).
I can be a little boring on the subject, but audax for me is all about the community and volunteering is where it really comes to life for me.
So, if you haven't done it yet, I can strongly recommend taking a day off the bike from time to time. (plus there are always tons of cakes left over that have to be eaten by someone). And if you can spare a few days, I had one of the best holidays working at St Ives for a week on LEL... Danial should be charging for places next year!