Originally Posted by blueDC
Also, NRT SQ|SK lounge has food, in case you are hungry for sushi or noodles

With 3 hours, I would probably eat at SQ|SK and shower/wi-fi at UA|RCC. It's quite a walk between the two though and SQ|SK's opening hours may not suit you.
Are the opening hours posted somewhere? I get in at 3:30 pm and depart again at 6:45 pm.