I used to live in New Zealand. SAR reports from the Arthur's Pass area are posted online and I still occasionally check them out. The weather at AP can be unpredictable and harsh regardless of the season, so knowing what you are doing up there is really important.

The reports are pretty candid and often point out lack of proper gear, lack of navigation skills or lack of other skills, including climbing, as the cause of the rescue or unfortunately, the occasional fatality.

In one instance, an inexperienced hiker was abandoned by her friends to fend for herself while they retreated to safety. They were also stupid enough to tell her the water wasn't safe to drink, which as anyone in NZ should know is totally untrue above what I call the "sheep line." The rescuers recommendation to her was pretty funny, but true-get some new friends.