Overall recommendation: We would recommend to spend one full day in Phnom Penh and three full days in Siem Reap. We found the "Lonely Planet" guide book on Cambodia to be very useful. Our itinerary: Day 1: Hong Kong -> Phnom Penh Day 2: Phnom Penh day tour: Royal Palace, National Museum, Central Market etc. Day 3: Phnom Penh -> Siem Reap: Visiting Angkor Thom and Angkor Wat Area Day 4: Siem Reap: More magnificent temples Day 5: Siem Reap: Banteay Seri, Western Baray and Tonle Sap Lake Day 6: Siem Reap->Phnom Penh->Hong Kong Weather: November - February is the best time to visit as it is the cool and dry season. March - May is hot and dry June - August is hot and wet Septermber - October is cool and wet We went there during 20-25 Dec 2001, it was very sunny and temperature was around 27C. Good thing about the dry season was that we didn't see too many mosquitos, so you have less concern of tropical diseases. Flight information: Dragon air and Royal Air Cambodge has regular direct flights between Hong Kong and Phnom Penh. For other locations, please refer to your local airlines. Visa and airport tax:You can obtain the visa at the Phnom Penh airport for US$20 per person. There is an airport tax of US$20 per person when you fly international from Phnom Penh or US$10 per person when you fly domestic. US dollar is commonly used in all tourist areas and prices are all quoted in US dollars, you don't need to exchange in advance for the local currency (Rie) as you can get enough Rie changes from small purchases. Food: Don't set your expectation too high. Cambodia is not famous for its food and you will find it very similar to Chinese/Thai/Vietnamese food with no surprises. Car renting: Hiring a car (with the driver) would cost US$15-60 depends on your bargaining skills, whether you are hiring, half-day or full day, and whether you are also hiring a guide. With a proper guide book, you can probably travel Phnom Penh without a guide, in the Angkor Area, we found the guide useful in explaining the history of the temples in great details. Renting motorbike is also common.