Just got back from Japan traveling QF. Was travelling with a friend who is QF Plat. We had no trouble at all accessing the JAL 1st lounge at NRT prior to our flight back on Sunday evening. The lounge is large and was quite busy. Food was very good - Japanese and "European" options. Decent range of drinks. Nice champagne. Downsides: no views, and the layout is almost like a high-class cafeteria. Tiled floors adds to this impression and noise. It was not really a luxury experience nor as quiet and relaxing as one might expect for a 1st class lounge.