Thanks everyone for your kind responses - I just wanted to share what was probably the most interesting weekend I've spent on a bike. The 3-Day ended Sunday night, and that Monday morning I signed on for next year's crew. Although this was the first year they've have bikes in Atlanta, some other cities have used bicycles in the past. It was the most amazing experience I've ever had, and I highly recommend it. www.3-day.org, and register for crew. It's too early to specify the route safety crew, but at least I'm on the list.