Boat from Koh Samui to Surat Thani
I'm travelling to Thailand coming february 2010.
During my trip, it is my plan to take a boat from Koh Samui to Surat Thani, and transferring to the airport to pick a car which is already arranged for me.
Does anyone know wether it is possible (or indeed necessary) to book a ticket in advance for the boattrip?
Or is it just a matter of showing up, and taking the boat?
Any info would be appreciated.