Hello! It's great to hear that you're planning to visit Tangier, Chefchaouen, and Tétouan. Here are some comprehensive travel tips to assist you on your journey.

Best Time to Visit:
In Morocco, the best time to visit is during Spring (April to June) or Fall (September to October) when the weather is pleasant and not extremely hot. The summer months, particularly July and August, can be quite hot in Tangier and Tétouan, whereas Chefchaouen in the mountains is cooler.

Route and Accessibility:
Starting from Tangier, you can reach Chefchaouen by bus in approximately 4 hours. From Chefchaouen, Tétouan is about 1.5 hours away by bus. All cities are well-connected so you should not face major accessibility issues.

Accommodation and Booking:
There's a variety of accommodation options in all three cities, ranging from luxury hotels to budget guest houses and traditional Moroccan Riads. It's recommended to book accommodations well in advance to secure the best rates.

Clothing and Essentials:
Moroccan culture is quite conservative. It's recommended to dress modestly, avoiding revealing clothes. Apart from that, carry sunscreen, hats, and cooling glasses for protection from the sun. Don't forget to pack a good pair of walking shoes as the cities have narrow, often hilly streets.

Health and Safety:
Ensure you are up-to-date with routine vaccines before traveling. It's advisable to only drink bottled water. Tangier and Tétouan are generally safe but like any other city, watch out for pickpockets especially in crowded areas and maintain general vigilance.

Local Etiquette and Respect:
Respect local traditions and customs. Avoid discussing politics and religion. Always ask permission before taking photographs of people. Tipping around 10% is customary in restaurants.