We went camping last weekend, Halloween night, with some good friends. We absolutely froze our buns off at night, but it was a lot of fun. Now I will say the kids were warm and cozy, but Joey and I...not so good. We only got about one hour of sleep that night. Yes, we did have a heater, but our tent has ventilation at the top so the heat was escaping. Brother and sister were cozy in their respective beds and never knew their parents had hypothermia! We are thinking about making this a yearly tradition if we can get a better heater.