The next step in the preparation is to get acquainted with the places we will visit. Let us take Cuzco as an example. First, get a good travel guide. For Peru I use Peru Travel Guide of Lonely Planet. The city itself, which is the Inca capital, has two faces: Inca and Spanish, and is situated in the Sacred Valley. Within its city limits it has already a lot of interesting places to visit: Plaza de Armas with La Catedral, Qorikancha, and Saksaywaman. Other nice places to visit in the Sacred Valley are of course Machu Picchu, the market in Pisac, and the salt mines in Maras. I use Evernote to make lists of places I want to visit.
As far as equipment is concerned, although tele lenses are very good in isolating a subject, quite often a wide-angle lens gives the viewer a better feeling of being part of the scene. However, to achieve that, you have to get closer! I already decided to take my 28-300mm lens, it gives me the flexibility I expect to need. The main reason for not taking separate tele and wide-angle lenses is that I am afraid of getting dust in my camera if I change lenses.
For the places we are going to visit I look on the internet for pictures to get inspired. I use the same Evernote to make lists of the kind of pictures I want to take, like a colorful Inca indian with a llama. I notice myself that I should not get overwhelmed by the many high quality pictures I see on the internet. I try to keep in mind that on location I find the right kind of combination of subject, perspective, lines, colors, and light to capture the essence of the atmosphere there. The latter makes the difference. My creativity and intuition will help me.