Thanks for all the replies and advice! I have now been back since late August and can confirm that it was a magical trip and much different from our Kenya experience. Open vehicles and night drives were just some of the unique things about it but we also loved the smallish camps(8-15 people). I would HIGHLY recommend Wilderness Safaris and they have won a coveted eco award recently(Nat'l Geo?)-we were well taken care of yet really felt we were in the "bush." The River Club in Zambia was also a highlight. Since we were there in August, there were very few bugs to boot!