Hi old Farrier, not sure where you are going if you are going to Namibia (great choice)you can only get Namibian dollars at the airport when there,(unless anyone got some left over on SD they will sell you ) 1 Namibian dollar = to 58p approx. .... although in my experience for tips they will accept US dollars , I take both, and a few mora cheap knives to give to trackers skinners as well .they also do not mind S.A.Rand