Cambodia is all about the sunrise at Angkor Wat temple and its the largest religious monument in the world, on a site. It was originally constructed as a Hindu temple dedicated to lord Vishnu for the Khmer Empire, gradually transforming into a Buddhist temple towards the end of the 12th century. This temple really takes you back in history.
The floating village at Tonle Sap is less commercial and I would recommend it before leaving Siem Reap to experience the lifestyle of the local Khmer people.
Cambodian cuisine is very similar to Thai and one must try the Amok curry and its rich flavours of galangal, fresh coconut milk and lemongrass. Do not forget their great condensed milk coffees and experience local restaurants which have been in existence post the civil war.
I would recommend you land in Siem Reap and catch a flight to the most beautiful island of Koh Rong via Sihanoukville Port. head out the big capital of Phnom Penh to experience a more diverse Cambodia and take the flight out.
Souvenirs are an important part of a holiday and I brought back magnets, essential oils, spices , home grown sticky rice and local beer...