Hello traveler! It sounds like a fantastic trip you're planning to the beautiful cities of Vientiane, Luang Prabang, and Pakse in Laos. Here are some travel tips for your journey.

Best Time to Visit:
The best time to visit Laos is between November to March during the dry season when the climate is cooler and you can best enjoy outdoor activities.

Route and Accessibility:
The most common route to start your journey would be flying into the capital city, Vientiane. From there, you could take a domestic flight or bus to Luang Prabang, and then continue on to Pakse. Both cities are well connected to Vientiane with regular flights and bus routes.

Accommodation and Booking:
Vientiane has a wide range of accommodations available to fit any budget, from luxury hotels to guesthouses. It's recommended to book in advance, especially during peak tourist season. Similarly, Luang Prabang and Pakse offer a variety of accommodations to suit various budget ranges.

Clothing and Essentials:
Pack lightweight, breathable clothing for the warm tropical climate. Don't forget your sunscreen, hat and sunglasses. A light raincoat or umbrella may be helpful during the rainy season. Comfortable shoes are a must for exploring the cities on foot.

Health and Safety:
Before you go, it's a good idea to check with your doctor and get advice on vaccinations or any health precautions you may need. Drink only bottled or purified water and avoid ice unless you know it's made from purified water. Always care for your personal belongings as pick-pocketing can occur in crowded places.

Local Etiquette and Respect:
Laotians are generally friendly and polite, and as a visitor, you should try to mimic their behavior. Dress modestly, especially when visiting temples or religious sites. Show respect for the monarchy and the government.