So we can pickup the One Way Suica + NEX for 3,500 JPY at NRT. We can then return the Suica card for our 500 JPY refund, less 210 JPY processing if any money is left on the card.

So basically for 3,500 JPY we are getting a one way NEX ticket (2,940 JPY value to Tokyo) and 1,500 JPY on the Suica card + the potential refund of 500 JPY. Seems like a great deal!

Where would we refund the Suica card to receive the deposit back?

How do I figure out which lines we can use it? We are staying in Roppongi but I do not see that station on the map on the website.