Ma'am here's your boarding pass - now buckle up, here are all the lounges you can access:
QF - This is the lounge we recommend you go to. It has a QF service desk, QF boarding announcements, is right next to the gates QF usually uses, and has no queue for the showers. It is otherwise unremarkable.
CX - Arguably the worst lounge at Nari- actually never mind, this lounge closes in 30 minutes so let's skip this one.
AA - Hidden in a corner and down a set of escalators, this isn't the worst lounge at NRT but also far from the best. Keep track of time because you won't get any boarding calls here, and it's a 15 minute brisk walk to your gate over in the Satellite terminal.
JL (Main) - We've recently renovated this lounge, it's a lot larger now BUT we are currently renovating the showers. There is usually a queue in excess of three hours if you want a shower here. No boarding announcements, allow 20 minutes to get to your gate.
JL (Satellite) - Not as large at the JL Main terminal lounge, but equally packed with the afternoon NRT rush trying to get a shower. No boarding announcements here, but that won't matter because we'll ask you to leave at 7:20pm when we close the lounge.
EK - This lounge is nice, but it doesn't open for another 30 minutes so maybe walk around aimlessly for a while. Oh, you're also looking for the not-immediately-obvious elevator in the main terminal to get here, and it's a 15 minute walk to your gate. No boarding announcements.
Oh, Ma'am I just noticed you're a Platinum member - thanks for your loyalty! In that case let me suggest two more lounges!
JL First (Main) - Newly renovated, this lounge has an amazing food selection - made to order sushi, ramen and a la carte plates of the day. Showers? You're looking at a one hour wait (yes, this is what I was quoted last month)
JL First (Satellite) - No queue for showers, better whiskey than the Main terminal, but no a la carte food and we'll kick you out before your flight boards.