I heard second-hand that a number of people that started on the 17th pulled out due to the combination of bad weather and lack of appropriate equipment for the conditions. They made it as far as Kitchen Hut but pulled out. Apparently they had plastic ponchos, city clothing and inappropriate footwear. I was told that one was even carrying plastic bags containing gear/clothing!
It's good that they made the decision to pull out but surprising that they didn't pay much attention to the gear advice in the information pack.