Don't know how similar it is, but I lived and worked in Australia for six months; met a lot of Australians who had vacationed in South Africa....both Commonwealth countries in the Southern Hemisphere. Listening to them recount their vacations, I got the impression that there's a lot of cultural similarities between the two countries.
As I came to appreciate, Australians like their beer. Maybe South Africans are the same? So it wouldn't be unusual for 'blokes' to be driving home somewhat tipsy in the early morning.
Anyway, I've always wanted to visit South Africa too. AFAIK you never sailed south of the equator; North Atlantic crossings only? But you seem to vacation in interesting seaports that I find very alluring too. Please keep up the descriptive posts!