You are not concerned with FROSTBITE in cold water, you are concerned with HYPOTHERMIA, which is MUCH more dangerous. Water wicks away body heat up to 25 times as fast as air does. In extreme cases, 15 minutes in the water can be FATAL. Granted, the Pattersons are in Ontario, not Yellowknife, but it can set in fast, and a small child is more susceptible to an adult, due to less body mass. I will assume John would be at least competent to assess April onsite. but whitewater rafters don’t wear wetsuits or drysuits because they are comfortable or stylish.
Horse poop is 100% organic and natural.
Water and salt are both inorganic. and if you do not ingest them, you will die quickly.
And there are places to shop other than Whole Paycheck.