Grace, when you go on game drives, you will be riding over dirt roads in the parks. Obviously, the condition of those roads varies with the weather, road traffic and animal traffic. A relatively smooth road one day, can be quite bumpy the next day. You should be aware that the driver/guides will move slowly when riding on these unimproved roads. When riding between camps, some roads are paved, some not. The trip can be bumpy. We would suggest that you have a conversation with your physician to get a clear opinion as to any danger as it may apply to you and your condition.