Selfdrive4x4 provided all that they said they would, and, as a result, we had great trip unmarred by any major problems.
Strengths
When the airlines changed our schedule by two days, Hans was quick to incorporate the changes into a new trip. We found that the What's App call with Hans prior to the trip was very helpful and removed some anxiety about the trip and about getting tested for Covid.
Improvements or suggestions
There was lots of time for relaxed self-game drives between campsites in Etosha NP but it felt far more rushed in the delta of Botswana, where more of the day is spent doing some challenging driving in areas that are not conducive to seeing game, and then there is less incentive to hop back in for more driving after arriving at the campsite. One solution might be to encourage a 2nd night at a site that is especially suited to self game drives.