Hi Mary,
I did this tour in Sept 2011 and it was my best holiday ever! The itinerary has changed a bit since then but it still should be a fantastic experience. If possible make sure you do the Zambia add-on, it was the icing on the cake! If you do a search, I wrote a review on my holiday and also started a thread on the Share your travel tips forum, which hopefully might be of some help. Any specific questions I'll do my best to answer them! To whet your appetite my favourite experiences on this tour were seeing the stunning coastal scenery south and east of Cape Town (including the Garden Route), the amazing game drives in Kruger and Chobe NP (Botswana), seeing the Victoria Falls from the air in a helicopter, a sunset cruise on the Zambezi and a gourmet meal on the Royal Livingstone Express (vintage steam train).
I really hope you book this tour, I'm sure you won't regret it!
Best wishes,
Bob