BA lounge in JFK is a lot bigger than the CX lounge in YVR.
Bigger meaning better? (I've never been to a lounge; I don't know what makes a lounge worthwhile.)
Can I also visit the lounge after I get off the flight, or is it only while I'm waiting to board?
Yes better, you can see Dan reviewed both of them on the mainsite.Depends on the route your taking. In this case if you go JFK to YVR, you will then clear customs and won't be able to access the CX lounge regardless, because you will be landside.
Can I swing by the lounge before clearing customs?
Ah, I see. "The Cathay Pacific business lounge in Vancouver is pathetic, just a terrible excuse for a lounge. Amazing that they can operate great lounges in Hong Kong yet are incapable of doing the same elsewhere."Can I swing by the lounge before clearing customs?