Originally Posted by number_6

But the best JL lounge is not accessible, it is by invitation only. This is their real F lounge (though not all F pax on JL can use it, so not quite the same as the CR on BA). If you can use it, you'll know, and if you cannot, don't fret about it, there is no way to get in (or even find out the location of the lounge, for that matter, it is well hidden).