Hello! That sounds like quite an adventure. Here are some tips for your trip to Tehran, Isfahan, and Shiraz in Iran.

Best Time to Visit:
The best time to visit these cities in Iran is in the spring (March to June) and autumn (September to November). The weather is most pleasant during these periods. Avoid the summer months which can get very hot.

Route and Accessibility:
Tehran's Imam Khomeini International Airport serves as an entry point to Iran. From Tehran, the most efficient way to travel around the country is by domestic flights or long-distance buses. Trains are also an option but the network is not as extensive.

Accommodation and Booking:
Accommodation in all three cities ranges from budget hostels to luxury hotels. Booking can be done through popular online platforms, but also consider local Persian booking websites that offer competitive prices. Be sure to check reviews before securing your booking.

Clothing and Essentials:
Iran is an Islamic country which mandates modest dress for both men and women. Pack clothes that cover the body completely, including a headscarf for women. Sunscreen, hats, and sunglasses are essentials due to the strong sun.

Health and Safety:
Standard vaccinations are recommended for travel to Iran. Tap water is safe to drink in the cities. Safety is generally not a concern, although normal precautions should be taken. Do secure travel insurance before your trip.

Local Etiquette and Respect:
Iranians are warm and hospitable. Respect local customs such as avoiding public display of affection and refraining from discussing politically sensitive topics. During the holy month of Ramadan, do not eat, drink, or smoke publicly during daylight hours.