We're a family of four (two kids, 10 and 12) and recently bought a new Forest River Rockwood Freedom 2280 popup. My BIL has a small cabin in northern WI that we've stayed at before. It gets a pretty cramped with two families sleeping (a small one bedroom). We're thinking of hauling the pup up there if it isn't excessively cold or snowy. Average high for where we are staying in late November is 32F, low of 16F. We'd only be sleeping in it, and my BIL is running a new circuit, wiring to where we could plug in (he's an electrician) at least 20 amp. We've never cold weather camped. I just winterized the plumbing yesterday, and have reflectix coming for the windows. The camper has a propane heater and heated mattresses for the two bunks we'd be sleeping on. We also can bring an oil filled electric heater if need be. I have a few questions: 1) I've read about condensation, what do we do to minimize that? I've heard crack the vent fan at night. Anything else? 2) Since we're just sleeping there, do we just fire up the heater at night before bed? I see no reason to keep it on during the day unless there is some other benefit. 3) How long does propane last? We'd probably be there four nights. Do I bring an extra tank? Is it worth bringing the electric heater? 4) I imagine we'd need our cold weather sleeping bags (which aren't really special) plus maybe an extra comforter per bunk. Will that suffice? Any other input is appreciated. Thanks.