Hello! That sounds like an exciting journey! Here are some tips for your trip to Tunis, Sfax, and Monastir in Tunisia:

Best Time to Visit:
The best time to visit Tunisia is during the spring months of March to May, or during fall from September to November. These months offer pleasant weather and fewer tourists. Summer can be extremely hot and crowded with tourists, especially in coastal areas.

Route and Accessibility:
Tunis, the capital, has the largest international airport in Tunisia - Tunis-Carthage International Airport (TUN), offering connections to many cities worldwide. From Tunis, you can take a domestic flight or train to Sfax or Monastir. Both cities also have airports. Road networks in Tunisia are generally well maintained if you prefer to drive.

Accommodation and Booking:
Tunis, Sfax, and Monastir have accommodations catering to all budgets. Whether you prefer luxury, boutique hotels, or budget-friendly guesthouses, it would be advisable to book in advance, especially during peak tourist seasons.

Clothing and Essentials:
Pack lightweight clothing for the warm months and layers for chillier periods. Don’t forget your sunscreen, sunglasses, and hats to protect against the sun. If you plan to visit religious sites, carry modest clothing which covers your shoulders and knees.

Health and Safety:
No specific vaccinations are required for Tunisia, but it's always a good idea to be up to date on all routine vaccines. While Tunisia is relatively safe make sure to carry emergency numbers and avoid deserted areas late at night. Always ensure your travel insurance covers all your planned activities.

Local Etiquette and Respect:
Tunisians are warm and friendly people. Respectful behavior and attire are appreciated, especially in religious places. Bargaining is common in markets. If invited to a Tunisian home, it's polite to bring a small gift for the host.