Hello! It's great to hear that you are planning to visit the beautiful cities of Ajaccio, Bastia, Corte, and Bonifacio in Corsica, France. Here are some travel tips to assist you in your journey.

Best Time to Visit:
The best time to visit these cities in Corsica is from May to September when the weather is warm and pleasant. The island gets quite busy in July and August, so if you prefer quieter periods, aim for the shoulder seasons in May, June, or September.

Route and Accessibility:
Ajaccio and Bastia have international airports where you can land from major European cities. From Ajaccio or Bastia, you can reach Corte and Bonifacio by the regional train (Train de Corse) or by car through well-maintained and scenic roads. However, be prepared for winding roads especially when heading towards Bonifacio which is at the southern tip of the island.

Accommodation and Booking:
These cities have a variety of accommodation options from luxury hotels to quaint bed and breakfasts. It's advised to book your accommodation well in advance especially in the peak summer months. Websites such as Booking.com, Airbnb, and the official tourism website of Corsica can be used for bookings.

Clothing and Essentials:
Pack light clothing for the summer months along with swimwear if you plan to visit the beaches. A sunscreen of good SPF is essential alongside a hat and sunglasses. Do pack a light jacket or sweater for cooler evenings. Don't forget to carry a good pair of hiking shoes if you plan to explore the natural parks.

Health and Safety:
Ensure you're up-to-date with routine vaccinations. Carry a basic first-aid kit, particularly if you intend to hike. Always stay hydrated and use sun protection. Although Corsica is generally safe, stay vigilant of your belongings, especially in crowded areas.

Local Etiquette and Respect:
Corsican people appreciate politeness. Try to learn a few basic phrases in French. Respect local customs and environments, especially when visiting nature reserves or parks.