Yes - the CX lounge was quite crowded last week when we flew out. But the food selection wasn't bad for a J lounge (I particularly liked the cheese board) and it never seemed to get to the point where there were no seats.

But I didn't know about the AA lounge until we were walking to the gate so we didn't have a chance to pop in. Do they generally admit on Class of flight, or only on OW status? (In other words, as OW Rubies (i.e. no OW lounge access on status) flying in F, would they have let us in?)