Absolutely! Tangier, Chefchaouen, and Tétouan are beautiful cities in Morocco, each with its unique charm and heritage. Here are some travel tips for your visit:

Best Time to Visit:
The ideal time to visit these Moroccan cities is from March to May and September to November as the temperatures are milder. July and August can be unbearably hot.

Route and Accessibility:
Most international flights land in Casablanca or Marrakesh; hence, you may need to take an internal flight or a train to reach Tangier.
Regular buses and taxis are available from Tangier to Chefchaouen and Tétouan.

Altitude and Acclimatization:
These cities are at sea level and hence altitude sickness should not be a concern. However, if you are visiting the Rif Mountains near Chefchaouen, take it slow and stay hydrated.

Accommodation and Booking:
It is advisable to book your accommodations in advance due to the popularity of these destinations, especially in peak season. Variety of accommodations are available, from budget hostels to luxury hotels.

Clothing and Essentials:
Pack lightweight, breathable clothing for the day and a warm jacket for cooler evenings.
Modesty is key in Morocco, particularly when visiting religious sites. Cover your shoulders and knees to respect local customs.
Don't forget your sunscreen, hat, and sunglasses.

Health and Safety:
Stay vigilant and be cautious of your belongings in crowded markets and tourist spots. It's advisable to have travel insurance covering loss, theft, or medical emergencies.
Only drink bottled water and avoid uncooked food to avoid any digestive issues.

Local Etiquette and Respect:
Moroccan people are warm and hospitable. A basic understanding of French or Arabic can be beneficial. Respect the local customs and traditions, especially while visiting holy places.
The call to prayer is observed five times a day - remain respectful during these times.
Don't photograph people without their permission.