All we ask Caroline at the lodge for is a taxi to the border. What we get is a driver named Steven who does that bit, but also chaperones us through the slightly confusing Zambian exit system and then drives us over the Victoria Falls Bridge as far as Zimbabwe immigration where he points out a smiling guy in a blue T-shirt. The smiling guy is Kenny, and before we know it we’ve skipped the line, got the obligatory stamps in our passports and been driven to the very door of our next stay. Expert courier service for the price of a taxi. It’s how it is here: service repeatedly…