On my next trip to LOS I'm planning something a little different. Want to spend a few days in Pattaya, then head off to Koh Chang, where I have been before. However, this time I'm planning a jump from Koh Chang to Siem Reap, but I was wondering what the best option would be. Should I go to Trat then perhaps fly to say Siem Riep or Sihanoukville if possible - don't particulary want to do Pnom Penh this time.

What would be great is take a boat direct from Koh Chang to Sihanoukville - is that possible - or is the question a bit out there?

Tks