Sure! Here are some travel tips for your visit to Exeter, Sidmouth, Lyme Regis, and Weymouth:

Best Time to Visit:
The ideal time to visit these places is during the spring and summer months, from April through September. The weather is comparatively warm and is perfect for outdoor activities.

Route and Accessibility:
You can start your journey from Exeter, a beautiful city in the county of Devon. From Exeter, Sidmouth is around 16 miles away and can be reached by bus, car or train. Lyme Regis is around 25 miles from Sidmouth and can be reached by bus or car, while Weymouth is approximately 35 miles from Lyme Regis.

Altitude and Acclimatization:
These destinations are all located near sea level, so there's no need to worry about acclimatizing for high altitude.

Accommodation and Booking:
The South West of England has a wide range of accommodation options, including hotels, bed & breakfasts, and self-catering cottages. It is advisable to book your accommodation in advance especially during the peak season.

Clothing and Essentials:
Bring comfortable clothing suitable for changeable weather. Even in the summer, it can occasionally be cool, particularly at night. Consider bringing a light waterproof jacket for unexpected rain showers. A good pair of walking shoes would also be useful for exploring the local area.

Health and Safety:
Carry any necessary medication, a basic first aid kit, and sun protection. Follow safety guidance on the local beaches. Be aware that some rural areas may have limited mobile phone signal.

Local Etiquette and Respect:
England is generally a casual and relaxed country, though it's always good etiquette to be polite and considerate. In historic sites and at beaches, ensure you don't leave litter behind. Residents appreciate tourists who respect their natural and cultural heritage.