Refusing food or drink can be seen as impolite; it's better to accept at least a small portion to show appreciation for the host's hospitality.

Dress modestly, covering arms and legs, and women should wear a headscarf; remove shoes before entering prayer areas.

Avoid showing the soles of your feet, pointing with your finger, or giving a thumbs-up, as these can be considered rude.

Tipping is appreciated but not mandatory; rounding up the bill or leaving 5-10% in restaurants is common, while taxi fares are usually rounded up.

Always ask for permission before photographing people, especially women, as taking photos without consent can cause offense or legal issues.

Wait to be seated, eat with your right hand, and try a bit of everything offered to show respect for the host's efforts.

Public displays of affection are frowned upon, and alcohol is strictly prohibited; always carry identification as police may request it.

Use local buses and shared taxis (savari), eat at small local restaurants, and stay in traditional guesthouses (mosafirkhaneh) to save money.

Support local artisans by buying handmade crafts, use reusable water bottles, and respect natural sites by not leaving any trash behind.

Try Fesenjan (pomegranate walnut stew) in the north, Ghormeh Sabzi (herb stew) in central regions, and Baghali Polo (dill rice with fava beans) in the south.

Public transport can be crowded, and schedules may not always be reliable; consider hiring a private driver for long distances.

Use simple English, gestures, and a translation app; Iranians are generally patient and willing to help despite language barriers.