We went to RSA about 10 years ago, and it is a stunning country to visit. The scenery is amazing, the people are friendly, and the roads are excellent. If you have a bike licence, hire one and enjoy smooth roads with little traffic.
One tip I will give you is visit a private game park. Game reserves like the Kruger are vast in size, but you have to stay in your vehicle. You can see some amazing things, and we were very lucky, we saw a lion kill, but as the guide said, you can often drive through the Kruger and see nothing.
Private game parks are different. The rangers are on their radios finding out where the animals are, and you will walk through the bush to see them. We got within 20 yards of a pair of Cheetahs, 20 yards from a Rhino, 20 yards from a herd of elephants, walked through a pride of baboons 50 strong, 20 yards from a pack of wild dogs, had brunch by a lake with crocodiles and Hippos bobbing their heads up and down not too far away, had monkeys taking the piss and nicking our food, found a wild tortoise, but the best bit was, as we sat in our Land Rover (Yes, you do have to travel in vehicles to get about), we could see movement in the bushes, and a few minutes later we were surrounded by a pride of Lions, and they were literally within touching distance.
I could go on, but what I'm saying is the wildlife in Africa is something you must take in.
It's a savage, relentless and brutal environment, full of shit, bones and rotting carcasses, but you can't go all the way there without seeing it first hand.
It may not seem to be your cup of tea, but if you see if first hand, it will leave you with memories that will last you a lifetime.