by AlmostThere » Wed Sep 21, 2011 8:24 pm
If you're renting a car, you'll want to check with the rental company on whether you can use cables or chains on the vehicle in the first place. Many don't want you to do that.
March is winter - there will be snow, and it'll be cold if you aren't used to sleeping out in the low 40F - 30F range. I wouldn't put a heater in a tent; especially a propane one, carbon monoxide is dangerous.
A good warm sleeping bag and a good warm pad (not an uninsulated air mattress) will help you out a lot. So will layered clothing.
May is usually when things warm up, tho some years, like this one, snow and cold linger into June.