Thank you so much all of you.

I have a ton to think about. I think no matter what we end up doing it will be great - I have never been to Japan but just seeing how things flow and experiencing something quite different makes a successful trip.

I am working on the theory of osaka as a base. I was thinking of staying at the moxy Honmachi - it looks like it is nearer to nightlife? Now I have a few questions:

1. Would there be an onsen in Osaka that would be a good choice?
2. How difficult is it to get to Kyoto from Osaka? Do I even want to try a day trip?
3. I have heard that credit cards are not really widely used in Japan and that i should count on using cash? Are ATM's the best to get cash if this is the case?