This is not particularly a spoiler or speculation but the more logical threads on which to place it have been locked.
One extra interesting item that has been reported by Margie in an interview and during the live RFF interview with Trevor and rob is what happened in Guilin the first night. Apparently, they went up the mountain and slept in sleeping bags that each team had brought. It was cold and rainy and uncomfortable.
The same question applies to what happened between the faux pit stop in Beijing, but there are no answers to that yet.