Air New Zealand Air Points - Narita lounge options?

I am *G and booked FRA-NRT-AKL in C, arriving NRT with NH (terminal 1), departing with NZ (terminal 2).

Having a 3.5 h layover at NRT I definetely woul dlike to have a shower before i go on to AKL.

There seems to be a couple of lounge options

1. NH arrival lounge ( is ist after immigration? as ANA site says it also doubles as domestic departure lounge)

2. Any *G lounge?

3. The JAL lounge which is used my NZ ?

Do they all have shower facilities? What is the least crowded (shower-wise)?

Thanks a lot

1) depends on who has access to the arrivals lounge - some allow all first/business pax and others restrict to elites in first/business, perhaps check on the ANA forum?

2) should be able to use NH or UA lounges, provided on arrival go to airside transit rather than immigration (when they check your BP/ticket say you want to take the airside transit rather than hassle of immigration), then a long walk down to piers 3 4 or 5 to the lounges. You'll need to allow plenty of time to walk back to the airside transit bus (find out times it runs). Both NH lounges, and UA lounge has showers.

3) I cannot recall if JL lounge has showers.