1. Lemon grass & palm sugar can be used in every meal
2. When stuck in heavy traffic at a cross junction - just close your eyes and go
3. USD is the functional currency (of tourists) in Cambodia
4. Always slash prices by at least 50% when bargaining - don't be shy!
5. Learn basic Khmer (if u're Asian) - at tourist locations pretend to be a Cambodian & you'll get free access.