In case it helps, here's my post which was reporting back on what we did:
We had a fantastic time. This was what we did:
1st week in a beautiful villa in Camps Bay. We went to Boulders Beach, Chapmans Peak Hotel for brunch (except turns out they don't do brunch any more so had lunch there!), a day at the cricket (which was fantastic as we won!), a walking tour round Cape Town (history of apartheid) and lunch in Bo-Kaap, Cape Point where we saw baboons, Kirstenbosch, lunch at Klein Constantia (other lunches and dinners I can't remember!)
Then a beautiful drive to Robertson, over the Du Toitskloof pass, to stay at the most amazing hotel (Mo &Rosa) for a couple of nights, with a couple of vineyard tours/tastings, and an olive oil tasting.
Then on to Franschhoek for a few days where we did the wine bus/tram, with some beautiful wine tastings and food.
From there, to Hermanus where unfortunately the weather changed. Very good for the local communities, though, as the drought in SA is the most severe in the last 20 years. We had four days of pretty solid rain which did hamper what we were able to do. However, we enjoyed the town, despite lack of whales, wink, and the shops and restaurants were great.
Last stop was a couple of nights at the Aquila Game Reserve, where the rain continued - the first time it had rained there in 4 years! But it didn't spoil our time and we had amazing drives to see the animals much more up close and personal then I ever imagined would be possible. Our last day the sun returned, so we did enjoy a bit of warmth before we came back.
Thank you to everyone for your suggestions - it really helped. And definitely agree that it's a fantastic place to travel to.
Oh, and can definitely confirm/recommend a visit to Creation vineyard for the wine pairings/lunch. Fabulous.