That's a terrible route. You should be able to fly to Heathrow and then it's only 12 hours to Cape Town. We don't spend 36 hours in the air. Hawaii to Atlanta is 9 hours and then 18 hours on one flight to Joburg. The best time I've ever had is 34 hours door to door total travel time from Kona to Joburg but it's not fun. I've met people on the Atlanta flight that do it every month. They normally work for some charity or in Oil & Gas. With that many miles they get business or first so that makes it a lot easier but I'm sure it still takes its toll. I enjoyed looking at your work. I need to spend more time on the road.
If you are a top notch, worldwide known photographer, it is very likely that customers from all over the world will want to use your services (for fashion, events, sports, architecture, products etc.). But as we are focusing on travel photography, commercial organizations that deal with traveling and tourism are more likely to hire you. Notable examples are hotels, tour companies, airlines and so on.
Knowing how to use your camera is essential to success as a travel photographer because more often than not, it’s those spur of the moment shots that generate the goods. If you can quickly adapt to the surroundings and know what settings to change in a split-second in order to capture a moment, you’re in with a pretty good shot of becoming a professional photographer.
This year and I signed a long-term travel photography contract with Cape Town Tourism, the official tourism board in my favorite city in Africa. Meanwhile, I've sold tens of thousands of image licenses through multiple agencies over the years, host local workshops and photowalks in the cities I visit, and I'm constantly working on partnership and sponsorship deals behind-the-scenes. Even my travel photography website works hard for me, as I often get offers and inquiries directly from visitors.