Hi Jaco, let me start by saying Kgalagadi rocks
I will try to answer some of your question. Tweerivieren, electicity and cell pnone signal 24 hrs, Nossob electicity (generator) early morning until late at night, Kalahari TC no electricity. Both N & KTC gas for fridge / freezer or geyser. Picnic spots very basic no gasbraais as in Kruger. Do have braai to make fire and basic toilet facilities.
I have an inverter for charging batteries phone etc but you would be able to do so in all your camps except KTC. Inverter not expensive and good investment
Shops are basic so take everything although 2R shop better than others, rather approach shops as emergency. Take own drinking water as that in park tastes bad (can buy at shops, pricy)
4x4 route open for everyone ( prebook on the day) is only from Leeudril to 2R Mata Mata road, other you have to have reservation in the bushcamp to use 4x4 access road.
I live in Pretoria and leave early morning (3:00) and will be there at 15:00 some rest in between. Take numerous stop and go into consideration ( might loose quite some time here)
Enjoy your stay, yes it will be warm but a dry heat and worth it!
Kgalagadi rocks (yes I know I have said so)
12 - 15 Aug Pretoriuskop, KNP
March 2014 KTP
May 2014 Chobe Botswanahttp://wildlifeonshow.co.za/