Think of local etiquette as the operating system running underneath every interaction, invisible until you violate it. The expectations that show up almost everywhere include respecting queues and personal space, controlling noise in homes and public transport, punctuality for appointments, basic greetings and courtesies in the local language, and following house rules like removing shoes or bringing a small gift when invited over. Where cultures differ is in the details and the intensity, not the existence of such rules.
These norms carry more weight than newcomers realize because they are how communities maintain trust between strangers. When everyone sorts their rubbish correctly, keeps quiet hours, and waits their turn, daily life runs on cooperation rather than enforcement. A newcomer who joins that pattern is quickly absorbed into it; one who does not can find neighbors distant and doors subtly closed without ever hearing a complaint.
For integration, the practical path is observation plus one honest local advisor.