Who: People heading in to Tsim Sha Tsui and Kowloon.
What: They had several travel options...
This area has been a bus terminus for many years, so they had several bus routes to choose from. The closest bus we can see in the main photo is a number 12, heading to Sham Shui Po. The route is written on the side of the bus - it's not very clear to read, but it looks as though the first section ran along Canton Road.
If you preferred door-to-door service you could take a rickshaw. The passenger in the front rickshaw has the roof up for shade. He's noticed the photographer, and is looking straight at us. Next comes a man engrossed in his newspaper, and beyond that a couple of ladies, one shaded by a wide-brimmed hat, and the other sheltering beneath a parasol.
Or if you fancied the exercise, and didn't mind working up a sweat, you could always walk.
Where: The tip of Tsim Sha Tsui was an important transport interchange when this photo was taken. We've already noted the buses and rickshaws, but you could also catch the train. The KCR terminus building  is just out of sight to the left.
If you preferred to travel by boat, you also had a couple of choices. The light-coloured roof in the background marks the budget option, the Star Ferry's pier. Or if you had (considerably) more to spend, how about a journey on a passenger liner? They'd berth at the Kowloon Wharves , away to the right.
When: The shadows tell us it's about midday, time for tiffin!
Then how about the year? It was printed for use as a postcard but never mailed, so there isn't any postmark to help us.
The stamp box gives us a range of years. It's a type of "EKC" brand photographic paper that was used between 1930 and 1950 . I think it was likely a photo from the 1930s. Can any hat (or bus) experts make a better guess from the styles on display?