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.
My work as a freelance travel writer has remained sort of a back-up source of income for me since moving into the photography world. I really only do it when I feel like money is tight — so, yeah, I basically do it every month. Most of the travel writing clients these days are online, and they don’t pay like they used to. Still, I make enough in writing to help pay some of the bills. I’ve averaged about $400 a month so far in 2015 through freelance writing.
Unfortunately, due the language barriers I wasn't able to interview either of these two actors to gain an insight on their lives and background. They also seemed reluctant to allow me more than a few minutes to photograph them, either because they were waiting to perform (as in the top photograph) or just uncomfortable with the the attention of a stalking photographer (lower photograph).
Make use of people to give your images life and scale. If the facade of a particular building appeals to you, the picture may be that much better if you show people walking in front of it. They will give it scale and also let viewers know what sorts of people live there, how they dress, and the like. An outdoor café may be more interesting crowded with people than empty.