What kind of adaptor plug is used in Botswana?

I was in Botswana, Zimbabwe (Victoria Falls), and South Africa in Sept. 2017 (with Gate 1) and the plug that was used in all three countries was the standard UK square-prong plug. I also used the standard UK plug on a prior trip to South Africa in the late 1990's. I am taking a more detailed and extensive trip to Botswana in Spring 2019 with Road Scholar and the following information was listed in their pre-tour Information Packet: "NOTE on the South African plug it is VERY large (larger than plugs found in the US or Europe) and is not easily found. The plug used in Botswana is the same as that used in South Africa. If doing the pre-program extension to Victoria Falls, the type of plug used in Zimbabwe is the same as that used in the UK (type G). Visit a travel/sporting store, either in person or online, to purchase the adaptor." Is that really necessary? My experience with Road Scholar is that sometimes their pre-tour information is woefully out-of-date. For those of you who have been to Botswana recently, can you please verify whether or not I will need the special plug adaptor that Road Scholar refers to or whether the standard UK plug will do just fine, thank you.