Traveling to S. Africa -- Need advice (military)

[Daseal]

All,

I will be taking a work trip to South Africa shortly. I will be spending most of my time in Pretoria and some in Johannesburg. Has anyone been there before? If so, any suggestions on where to go/what to do while there? I'm not a very experienced travel, so basic foreign travel tips -- regardless of how elementary you may think they are, would be appreciated!

Additionally, the military part of the thread. I will be working in a place that has Marines stationed there for security. Step 1 when entering a new country at my job -- make friends with the Marines. I know we have a lot of ex-military on this board. When stationed abroad, what type of presents from the States would you like to get from someone. Keep in mind the presents can't be personalized and these guys aren't the typical deployed into a war zone, so they have a little more of the niceties than say a deployed guy. Just looking for some ideas to take these guys to thank them and build a bridge.