Sats,
'So I take it that road tax stuff is not sold at that border post?'
Yes that is what it was in 2007.
Here is the border posts info from the AA wbsite:
| Rietfontein |
08:00 - 16:30 |
Tel: (054) 531 0084 |
May I recommend that you phone them and ask them about the road tax since I am not sure about hours etc.
Or phone Hunters Inn / Bronco Supermarket; tel no
+26463280581 (from T4A)
'Any reason to avoid that route?'
IIRC you are adventurous by nature, so why would you need a reason to avoid a route? :-) If the route have too much 'sinkplaat' stop have a beer and deflate your vehicles tires or drive slower to enjoy more beer and the view... :-)