I am also considering going to South Africa using the itinerary below with my wife, does anyone have any thoughts on if this is doable?:

Passenger 1 (Me): USA Passport + Sweden Passport
Passenger 2 (wife): USA passport

December 17th - Atlanta, USA to Sweden (transit via Amsterdam) DELTA- KLM
December 29th - Sweden to Cape Town, South Africa (transit via Amsterdam) KLM-KLM
January 9th 2021 - Cape Town to Atlanta, USA (direct)

From what I understand, we will have no problem going to Sweden (my citizenship + marriage to my wife).

What I can't tell is if I will have an issue going to South Africa given the above itinerary and our combination of citizenship?

Austin