A great program. In another life, with different legs, I'd love to be doing something like that.
With the demise of the Friday Night Rides to the Coast, I've decided to give Audax a go next year. To this end I've been researching the weird world of Audax abbreviations and terminology (WWAAAT).
After watching and enjoying that program with my wife, I proceeded to try to explain what I've learned so far about Brevets, BPs, BRs, CEs, ECEs, SRs, RRTYs, AAA, DIYs (by GPS), AUK, ACP, LEL, and PBP. Before I'd exhausted my small but growing store of knowledge she was in fits of laughter and said "Is this a bit like jazz?" (Referring to Charlie Parker's comment about the complexity of Bebop: "If they can't play it, they can't steal it").
I'm doing my first one in January (a BP with AAA). Plenty of revision time left.