Siem Reap to Trat (ferry Pier to Koh Chang) it may take 06h30mn drive not including time to across border (between Poi Pet Cambodia size and Aranyaprathet Thailand size) you can choose your departure time between 07:00 am till 11:00 am Yes to make your trip smooth please provide your clear pick up location address including hotel name and wait our driver on time at the hotel lobby he will looking for you name that you have been provide head to the border Poi Pet to meet our guide who arrange your second taxi to Trat (ferry Pier to Koh Chang) our guide he will escort you across the border to Thailand size to get the second taxi to Trat.