I am a feat member and have been for years. Having done the last few blizzards, I can tell you that the people you run around are some of the most appreciative people on the planet.
However, DO NOT VOLUNTEER if you can't handle driving around in a blizzard for 8 to 10 hours.
In the last storm, I ferried people to and from the denver correctional facility (why someone would work at smith road, and live in green mountain is beyond me), got surgeons to sloans lake, and police dispatchers and staffers to work.
I remember thinking when I was done that I now knew why I had built my truck.