It's like camping. I've got a Thermarest (actually, two, I just noticed), a pillow, and a sleeping bag. Me, I can sleep pretty much anywhere, as long as the temperature is held at a comfortable setting by clothing or a thermostat.
It's also very much UNLIKE camping. I've got a fridge with food and drinks, I'm surrounded by computers of both the Mac and PC variety with broadband connectivity, there's a TV with cable. And the bathroom just down the hall!
OK, I'm delirious with fatigue, so I'd better publish this now before I keel over the keyboard.