Hi Trek,
I've been to Cambodia a few times. Its a bit rustic but personally I like it there. Amazing how people can recover and go on to live productive lives (Khmer Rouge reference.)
Are you flying into Phnom Penh? If so, I recommend the standard Visa on arrival at the small but modern PP airport. Takes about 15 minutes, $20 USD. Have correct change because they never do
There is an ATM before you exit the airport that spits out US currency. Small US bills will always be usefull, just don't let them give you a ripped or torn note as change. (Torn Riel, the Cambodian currency is not a problem; torn $US notes are
)
I stopped briefly Battambang and it was a sleepy, quaint old french colonial provincial city. The people are friendly and a bit less jaded than over touristed Thailand.
Angor Wat can keep you occupied for three days minimum (if you are into history.) Siem Reap, the small town outside Angor Wat, is developing rapidly and there are plenty of decent restaurants and guest houses available. If you do visit AW, consider returning to Phnom Penh by fast boat on the Tonal Sap River. Very senic and MUCh smoother than the roads
While in PP, have a meal and/or beverage at the Foreign Correspondents Club over looking the river-great view and atmosphere. Plenty of good food in PP and they do great French bread. There is a blind massage just north of Wat Phnom, worth the effort to find the place.
Khmer Surin restaurant has great Khmer food-tell Ong I said hello
(South of the Independence monument on PH 57.) Tuol Sleng Prison, Killing Fields (Khmer Rouge) and the National Museum are all worth a look.
Enjoy yourself there. Cambodia is safe and a real bargain
Lance