In September the Suica card (public transportation) from Yokohama to Tokyo and around Tokyo is introducing a NEW tourist card which should be a more flexible system. It should allow a wider use instead of buying 2 different system cards.
Will update later with further information and trial it in January.
Thank you for the update! I'm curious to see how your experience is because one of my grand bucket-list types of trips that I hopefully take someday involves going to Tokyo Disney and then taking a transpacific cruise back to the US. 
We are going to Tokyo Disneyland as well so I can give you some tips maybe when I get back.
Life is great
That's great news. Interested in learning more for our upcoming trip to Tokyo next year during Olympics. We are looking to buy one of the IC cards for our pre cruise stay. Looking forward to an update on this.
Good tip.
Thank you. That would be great.
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