Foreign currency - Botswana, Zambia, Malawi, Mozambique

[Frog]

Some advise please.
When travalling to Botswana, Zambia, Malawi, Mozambique what currency should I be taking?
Should I exchange Rands into foreign currency here in SA, or exchange Rands once in the country that I am travelling in?

 

[Excalibur]

 

[DeepBass9]

 

[MildDog]

 

[DeepBass9]

 

[mannemerak]

 

[Robin Brown]

 

[Frog]

 

[Crowley]

 

[Cpt K]