Absolutely! Visiting Fes, Marrakech, and Casablanca will certainly be quite an adventure. Here are some travel tips to enhance your journey through Morocco:

Best Time to Visit:
The ideal time to visit Fes, Marrakech, and Casablanca is during the spring (mid-March to May) or fall (September to November) when the weather is moderate. Summer months can be very hot, especially in Marrakech.

Route and Accessibility:
You can start in Casablanca, move to Marrakech and end your journey in Fes or vice versa. Regular train services are available which connects these cities.

Altitude and Acclimatization:
While no extreme altitude considerations are necessary for these cities, staying hydrated, especially during the hotter seasons, is always a good idea.

Accommodation and Booking:
Book accommodations in advance, specifically during peak travel seasons. Morocco has an array of choices, from luxury hotels to affordable riads (traditional Moroccan houses with an internal garden or courtyard).

Clothing and Essentials:
Pack lightweight clothing for the day but include a jacket or sweater as it cools down at night. Comfortable walking shoes are essential for exploring the winding streets of the Medina in Fes and Marrakech. Don't forget sunscreen, a hat, and sunglasses.

Health and Safety:
Carry basic medications and a first-aid kit. To avoid the common holiday tummy, try to eat freshly cooked food and drink bottled water.

Local Etiquette and Respect:
Moroccans are generally conservative, so dress modestly especially when visiting religious sites. Remember to ask for permission before taking pictures of locals or their merchandise. Bargaining is part of the culture here, so don't be afraid to negotiate prices in markets or taxis. Avoid public displays of affection.

Lastly, enjoy every moment of your trip through Morocco. It's an exotic and vibrant country with a rich history and welcoming locals. Don't forget to try the traditional food - think of tagine, couscous, and mint tea!