Culture sets the scoring rules for arrivals, and the same behavior can earn opposite marks in different places. Greetings are the obvious minefield: firm handshakes read as confidence in some cultures and aggression in others; some expect kisses on the cheek, others bows of calibrated depth, others no physical contact across genders at all.
Punctuality is scored completely differently across cultures: in some, arriving five minutes late damages trust immediately; in others, rigid punctuality itself seems slightly rude or naive, and events start when they start.
Two habits help enormously. Research the specific basics before arriving anywhere new, greeting form, punctuality norms, shoe and dress customs, since ten minutes of reading prevents the worst misreadings. Then judge what you encounter against local intent rather than home standards: most arrival behavior that feels wrong abroad is not rudeness, it is a different rulebook, and assuming good intent is right far more often than not.