What American mannerism is NOT shared by Peruvians?

One American mannerism not commonly shared by Peruvians is the casual use of first names in initial introductions. In the United States, it's typical to address someone by their first name shortly after meeting them, while in Peru, using formal titles and last names is more customary, especially in professional or respectful contexts. This reflects a broader cultural emphasis on formality and respect in interpersonal interactions in Peru.