Today we flew from Siem Reap to Ho Chi Minh City, 1:50 pm flight. We are Asian family with Australian passport. When we passed the counter the guy held onto passport and asked my husband " tip for me" . My husband backed a bit and said " what ? "So he repeated . After 3 times my husband didn't want problem and wanting his passport gave $1 and came out. He was happy he came out with only $1 . We don't want to report etc so much trouble for $1 but I want to post this so that people are aware that this problem still exist in Siem Reap.