The night tour will not be complete without trying their local delicacies such as spiders, beetles, snakes and a variety of insects to choose from. But I never had the stomach to try one.
Last part of the itinerary that night was the foot massage/spa using the doctor fish. And for 3 USD, you will have a beer, 2 USD for one hour and 1 USD for 30 minutes. I opted the last just for experience sake and I enjoyed it.
The sensation while your feet was being cleaned by the fish was at first unbearable but after a couple of minutes, I endured. You should try this experience while you are in Siem Reap.