A bit more about you and the hubby would help make suggestions.
When I was in Munich for Oktoberfest two years ago I went out to Dachau for a morning and actually met two people on their way from the US to Johannesburg for safari. They started with a few hours out there, which is pretty intense, and then told me their plan was a lunch/brewery tour, museum & visit a park before having a dinner on the way back towards the airport.