Just catching up on your ARWC experience - cool!
Interesting comment on TAs. When I volunteered at a World Champs, my observation was that the top teams treated the TA as part of the race and kept communicating with one another the whole time. "Need your water filled, Nellie?" By the time the #10 team arrived, the TA looked more like a break from racing and from one another. They retired to different corners of the TA area and prepared independently.
It was an incredible experience. Loved it!