Life is simple,the beer cold & cheap and the beach is great.
Getting to Sihanoukville (then tuk-tuk to Otres Beach)
An excellent summary is provided by Canby Publications Travel options to Sihanoukville. This covers options from Phnom Penh, Kampot, Vietnam, Thailand…
It is recommended you book your tickets through your hotel or a travel agency as they have the most up to date times etc. Yes, you will pay a dollar or two for this privilege but it will cut down on time-wasting running about.