The Gautrain has already been running for a year and has been exceptionally successful. If you have not used it already then I suggest that you experience is before it becomes a main form of transport to the airport and, from next year, to Pretoria. It is fast, clean and relatively easy to use (once you know a few basics).
The first thing about the Gautrain is the fact that it runs on a card-based system. You cannot be on the train without it. You can purchase a card from the station for about R50.00 you then load credit onto your account to use the train. If you are going to the airport then a minimum of R100.00 is needed, which is the rate required for one trip to or from the airport.
Once you have your Gautrain Gold Card you then go through a set of turnstiles where you swipe your card and then wait and board the train. There is sometimes a 15 minute wait if the trains are running as scheduled.
Now this is where I got a tad worried on the train the first time I went: you do not get charged for your usage until the very end. This is to allow for the correct toll to be paid whilst it calculates where you got on and where you got off.
When you get off the train you will then head to the exit and scan your card on the way out. Whatever you do, do not throw away your card because you can use it the next time you use the Gautrain.
There is a fully-running bus service that will take you to and from the stations and have quite a large route. The buses are equipped and ready for a large amount of baggage like the carriages on the train.
The Gautrain has made life a lot less stressful especially for the people who use the train a lot. It is fast (it will probably take you around 30 minutes to get to the airport) and it is cost effective if you would be leaving your car at the airport. I hope this helps you out a little, as I said, if you have not tried it yet do yourself a favour and go spend 45 minutes enjoying one of South Africa’s finest developments.