We know that this film was released in 1967 which means it was most likely filmed either earlier that year or sometime in 1966. The problem is that Ocean Terminal also opened in 1966 (on the 22nd March according to wiki), quite early on in the year. So either the limited HK locations on this film were shot a couple of years earlier or the film was perhaps some unused footage shot for another movie and incorporated into this one. My gut tells me that the HK images we see on film were licensed from someone else - there is just too little footage to justify spending money on a separate film crew to capture some brief scenes.
Well anyway, if you look at the screen grab below taken from the beginning of The World of Suzie Wong (the original post can be seen here), it's interesting to note that it shows the very same ship berthed at the very same wooden pier - you can even see the curved canopy that runs along the centre of the pier.
The World of Suzie Wong (1960)
I wonder if anyone out there knows how often the SS President Wilson used to berth at Hong Kong in the 1960's? It seems to have been a regular visitor and was eventually bought by CY Tung anyway.