Thanks for sharing a really nice report.
I was in Namibia for 2.5 weeks last November, and its easily one of the most amazing places I've ever been. I camped inside of Soususvlei, and they don't enforce the "1 hour before sunrise" rule at all. It was nearly 2 hours before sunrise, and everyone was driving all the way to the end of the road already. To be honest, I enjoyed the southern half of Namibia way more than the north. Way too many tour groups up north bouncing between Etosha & Soususvlei.