It pays to be a sensitive when visiting Peru, especially if talking about politics with the locals, or within earshot. Avoid discussing religion, drug use, and coca plants, as these can be especially steamy subjects. When referring to the local Amerindians, the term indigenas is acceptable, while indios is disrespectful. And expect to hear yourself referred to as a gringo or gringa, which is not meant to be insulting. You can avoid offending with your clothing, as well, by using some common sense before entering a church or monastery. For instance, wearing half-shirts, low-rise pants, and skinny tanks will probably not gain you a lot of popularity

When shopping, bargaining is both accepted and expected. This also holds true in taxis, and even in some hotels. But keep it light and friendly, and recognize when you have made a good deal. And when you first come into a shop or hotel, it is appropriate to say aloud, buenos dias (good day), buenas tardes (good afternoon), or buenas noches (good night). And don’t forget to speak up with adios or haste luego as you leave. Shaking hands upon coming and going is also considered good manners.

While photographing the colorful local activity is perfectly acceptable, many natives may ask for a tip after posing. Offering a small gratitude is fine, but not necessary. And taking pictures of airports, police, or military is strictly forbidden. Ask, also, before snapping pictures in churches, convents, and museums.