I have been to Koh Chang and it is not a bad trip logistically. I flew on PG to Trat and then pre arranged a car to pick us up at the airport and take to our hotel in Koh Chang and then to pick him up on the return. Yes the car ferry ride is boring only because the darn thing is so slow. I did not get to Koh Wai. Any recommendations on a white sandy beach with fine sand and also a clear water lagoon?