well, as i said there is a gold booth at cpt - also it does not specify (in the T&Cs) which airports do participate in southafrica (all licensee). For example the list of participting airports in europe is way easier to read. one could easily assume that "southafrica" in fact is every location (especially airportlocaions) As far as i understood, main difference is that you cant use points at a location which doesnt offer "gold service".
lets be clear from my experience, they will take everything they like off the program and everything they dont like they will refuse (like the upgrade - which was offered to me after endless talking - and yes they admitted that the pc upgrade would be applicable)