Hello! That sounds like an exciting adventure. Here are some travel tips for your trip to Morocco, specifically Casablanca, Marrakech, Fes, and Meknes.

Best Time to Visit:
The best time to visit these cities in Morocco is during the spring (April to June) or fall (September to November) when the weather is generally mild and comfortable.

Route and Accessibility:
You can start your journey from Casablanca, the biggest city, which has the biggest airport in Morocco, Mohammed V International Airport. From Casablanca, you can take a train or a bus to the other cities. The rail network in Morocco is extensive and reliable. Marrakech and Fes are well serviced by both buses and trains. For Meknes, the trains are the best way to get there.

Accommodation and Booking:
There's a range of accommodation options available from luxury hotels, budget guesthouses to traditional Moroccan Riads. It is advisable to book your accommodations in advance to secure the best rates and location. Many hotels and riads can be booked online through popular travel sites.

Clothing and Essentials:
Generally, pack lightweight, breathable clothing, but also remember to bring a few warmer items for the cooler evenings. Comfortable walking shoes are a must. Women might want to dress modestly to respect the local customs. Don't forget essentials like sunblock, a hat, a reusable water bottle, and a power converter for your electronics.

Health and Safety:
Ensure that you have comprehensive travel insurance that covers medical expenses. Stick to bottled water. Try to avoid uncooked foods that can't be peeled. Morocco is generally safe, but remember to keep an eye on your belongings as petty theft can occur in crowded areas.

Local Etiquette and Respect:
Moroccan people are hospitable and friendly. It is a predominantly Muslim country, so it's advised to dress conservatively and respect local customs and traditions. Always ask permission before taking someone's photo. Bargaining is a common practice at local markets.