I'm a tourist guide in the Atacama desert in Chile. We offer a big array of possibilities, from visiting the biggest system of radio telescopes in the world to climbing mountains. I'm a trilingual guide, I mostly do private tours.
Most tours I do are for retired people, so I show them around. That means they might not be very fit, so most of what I show is arqueology, geology, plant animals, landscape. I explain them our politics, our economy. You have to know a bit of everything... Especially, I deal with people, I'm always showing the same things, it's the people that change. You have to like the place you are showing and how to read what the client wants.
I love working with people. And I love my desert. So I try to show to all visitors how beautiful, interesting and resilient the Atacama is.
When those visitors are dicks (sorry). Yup, sometimes, you get not so good people... Let's not necessarily go into details. Also in tourism, not all companies are very serious, a lot of them make many mistakes, are not professional or have egos bigger than licancabur mountain. You have to be easy going, and choose well. Some occasional chauvinism if you're doing the extreme sports stuff.
Travel, be patient, care about other people. Get yourself into and out of problems. Take risks. In Chile you don't need a title to do my job, you need to speak languages. Now to keep the job... You need to be punctual, and capable. We are in the wilderness, stuff is going to happen and you'll be the leader. Depending on the type of tourism you're doing the worst thing that can happen is that you are talking out of your ass (and the client notices) or worst case scenario. Somebody fell into a geyser last year and because they took of her clothes she was flayed alive... Yeah, this is a super cool job. People save all year to visit your home, they choose you. That's an honor and you should always do your best.