Hi all, just finished with our interview. Arrived at 07:30 and parked at Sandton Mall (very short walk across to the consulate). We were second in the queue. As [at]Heidi556 explained, first counter collects all documents and photos, then you go pay, and finally get called to the last counter for the interview. It went unbelievably quick - I gave my abridged birth certificate in and they said nothing about it. Took the oath, and the officer said she doesn't see any issues and will approve our visas today. The officer did not even look at my finance statements. All done now it seems. Exciting times!