I ran this module a year and a half ago as a 3.0 conversion and it went peculiarly. The party found the haunted house - went thru it - found the caves, fought the smugglers, never realized that the contraband (silk and brandy) might be worth anything and left it all in the caves when they burned the house down... They didn't even attempt to locate the pirate ship. I didn't force things, so that drew the curtain on Saltmarsh, or Southwaite as I renamed it...