We took a fast boat from Chau Doc, Vietnam to Phnom Penh Cambodia. That whole day was disorienting. We got picked up at 6:30am by two men on cyclos (a bicycle with a buggie attached, kinda like a small tuk tuk), luggage and all into morning traffic. They drop us off at the port. We tried to be smart and spent our Vietnamese Dong the night before. We had to pay them in Hong Kong dollars since that was all we could find. They were not impressed.

We get on the boat, ride to the Vietnam checkpoint for exit, then Cambodia for entrance. But the captain speaks limited English, so we didn't know what was happening! Everything cleared ok. Btw, Cambodia's water immigration point is lovely. 4 more hours by boat to Phnom Penh. Good weather, smooth ride, and great scenery.