You won't need a guide to do day walks (or overnight walks), unless you're going into snowy places (places like Tongariro Alpine Crossing would be best with a guide if it's still snowy there). (theglobalcouple.com)
Living in a snowy place, I'm sure you sometimes put boots or gloves there, right? (glutenfreeonashoestring.com)
For those of you who live in really cold / snowy places... what have I missed and what items can't you live without? (babybunching.com)