Narita to Osaka

Hi there!

1.) Yes there will be more than enough time to travel to Osaka if you land around 13:00. The complete route does take about 4 hours from Narita Airport by Narita Express to Tokyo, from Tokyo with the Bullet train to Shin Osaka and then a local train in to Osaka it self.

2.) When you are in Osaka travel back to the Shinkansen station Shin-Osaka, you can take a direct bullet train from here to the station Odawara, which is the main bullet train station for the Hakone area.

3.) You can order one directly online here or look for a local re-seller.

I hope this helps!
Daniel