I not going but there is a company with tour packages for the US based
Cartan Tours.
Unlike Germany where you could buy your own plane ticket and easily book accommodation and train travel I feel that you better off going with a tour provider for SA. They have a serious shortage of hotel rooms and you may want a guide or a local contact/guide.
Imagine Rustenberg, where England will camp has only about 4000 rooms total. Now think about the 20,000 ticketed fans that England normally have and the ticketless mass that will converge to try and get in or just hang around, where them sleeping.
I worry about SA too because of the transport. People will probably have to find one location to stay, probably away from a host city, and then travel to all games. Even in Germany with the rail system that meant that on a matchday you could have a 3 hour train ride each way. I remember leaving early on a morning and coming back the next morning for each game.
Imagine travelling to and from games in SA a stream of Maxi-Taxis or PTSC buses. It could be hellish from a traffic standpoint.