I have the option of 3 days in Windhoek or spending an additional 3 days (for a total of 6) in Cape Town. What do you think?
I haven't been there, but a friend of mine who's visited over 50 countries said her favorite trip in the world was to the dunes. You can take a three-day fly-in safari, apparently. If you do it, please write a review, as I'd love to hear what it was like!