Japan Honeymoon. 3 weeks. Any tips would be appreciated!

Probably the 1000th post of this nature lately, but it's a long time dream for both of us to get to Japan so I'm trying to get whatever tips I can 🙂 March 9th to March 31st, going to the airport on 21:00 or so on March 30th to return home. Already booked Gracery Ginza for 13 nights, and we're still planning our Osaka hotel. We're planning to go on day trips to Mt. Fuji, Ghibli Park, Disney, USJ, Nara (And Kyoto from Osaka) and some more attractions.

Would Ghibli park be easier from Tokyo, or Osaka? Anything we shouldn't miss but didn't think about?

by hopsession_brewing