In reply to didntcomelast: I haven't led for World Challenge, but for similar companies operating in the same environment. The recommendation for "stout footwear", boots with ankle support etc. seems to be a default position, and reflects the risk-averse approach of these companies. Many of the participants won't have done any serious hillwalking. If your daughter is happy on Lakelend fells with Inov8 boots I'm sure she will be absolutely fine wearing them in Ecuador.