Ventilation is important! Any tent closed up tight will quickly become a sauna! There is rarely, if ever, a need to do that.

I once had a double wall tent (from Sierra Designs) that had to be closed up tight in the merest drizzle. Otherwise the rain came through the outward slanting screen door onto my head. It routinely got so much condensation on the fly that the water dripped through the inner tent, making puddles on the floor and my sleeping bag. Ever since then, I've refused to have a double wall tent--I want my condensation where I can wipe it off!

Vigorously shaking a wet tent before packing it up gets rid of a lot of moisture. (So does a dog's morning tail-wag routine!) The "Handi-Wipe" disposable towels from Clorox (found in supermarkets) are just as absorbent as those microfleece towels, are lighter, dry a lot faster and are cheaper.