Hello! I am excited to help with your travel plans to Brighton, Portsmouth, Bournemouth, and Exeter. Here are some detailed tips to make your journey comfortable and enjoyable.

Best Time to Visit:
The best time to visit these South Coast cities in the UK is generally between late spring and early autumn (May through September) when the weather is warm and pleasant.

Route and Accessibility:
All these cities are well-connected via the UK's extensive rail and bus network. You can start your trip in Brighton, then travel westwards to Portsmouth, Bournemouth, and finally Exeter. Car travel is another convenience option, although parking may not always be easy, particularly in Brighton.

Accommodation and Booking:
These cities have a variety of accommodations ranging from luxury hotels to budget hostels. Booking in advance is advised, especially during the summer peak season. Websites like Booking.com, Airbnb, and Expedia offer different types of accommodations and it’s easy to compare prices and facilities.

Clothing and Essentials:
Pack a mix of light, comfortable clothing and warm layers, as even in summer the evenings can cool down. A waterproof jacket is essential due to the unpredictable British weather. Comfortable shoes are important too as these cities are best explored by foot.

Health and Safety:
The UK has a high standard of healthcare and safety. Make sure you have travel insurance to cover any emergencies. As always, keep an eye on your belongings and avoid unlit areas at night. Stay hydrated and wear sun cream on hot days.

Local Etiquette and Respect:
British people are courteous and polite. Long lines or queues are common sight, and it's expected to wait your turn. Tipping is appreciated but not mandatory in pubs and casual dining places. In fine dining restaurants, 10-15% tip is standard if service charge is not included.