And to be clear - yes, you get access into OW F lounges when you're traveling internationally (regardless of class of service) assuming that you're
traveling on OW carrier(s) that day.
http://www.oneworld.com/ow/ffp/loung...by-tier-status
Emerald: When travelling on any of the oneworld member airlines, any customer who has earned Emerald tier status, is welcome (with one guest travelling on a flight operated and marketed by a oneworld airline) at any oneworld airlines' pre-flight lounges, including First Class, Business Class and frequent flyer lounges regardless of the class they are travelling in.
(You're on AY so you're fine. But if one were to be on a pure *A itinerary, one wouldn't be able to access OW F lounges.)