So, what we've discovered is that as long as we completely turn the fridge off during the day and then let it run overnight (at the lowest setting), the fridge items won't freeze and yet the freezer keeps everything solidly frozen. Saving extra battery and propane this way, and no fan needed!
JayFeather Ultralite X23B
GMC Sierra 2500 HD 4WD Crew Cab Longbed
Upgraded from a Big Agnes Tent!