Carpet is pimping on the playa, but it's heavy on the way there, and even heavier on the way back. First two years I used a heavy duty 24x24 silver tarp, but driving stakes through it, dropping things on it, and so on decimated it after two years, so this year I'm using an el cheapo blue tarp. It keeps my spills and crap off the playa, and the playa out of my bed, and if I ruin it, no big deal. It also leaves you the option of putting carpet down over it where you want to cushyness.
We wouldn't want to alarm the flock, they might start asking questions.