The
http://www.oneworld.com/ffp/lounge-access/ page states
When you fly First or Business Class with a oneworld member airline, you are free to enjoy that airline’s First or Business Class lounge (depending on which class you are flying) before departure, regardless of your frequent flyer tier status. This lounge access also applies when you connect from a domestic or intra-European segment to or from a oneworld longhaul First or Business Class flight.
So I get first class lounge access throughout the entire trip?