Bring sun block. The sun, even in winter, is like a blast furnace in Africa. Following the advice of the dermatologist who froze off my latest crop of wannabe skin cancers, I got Bullfrog SPF 50. I got up very early in the morning so it would have plenty of time to sink in, and slapped it on in great gouts. I had no trouble with the sun, but if you get this stuff in your eye, your shrieks will frighten away all the game within 12 miles.
Do not bring great, waffle-stomping boots with Vibram soles that are designed for climbing K-2. You want something that's light and flexible, and in which YOU CAN WALK QUIETLY. Do not buy Russell boots. I owned a pair and ended up giving them to a Zulu tracker because they flopped around on my feet. I understand this is common. Having them flop around on your feet, that is, not giving them to a Zulu tracker. You can give them to a Shona tracker, or an Ndbele tracker if it pleases you.