Want to pick-up the 2 day Tokyo Metro pass as well. Is it possible to start the first day tomorrow?Yes. You can start it on any date. But it has to be used on consecutive days.
Sumo (Don't have a ticket but want to go line up in the morning @ 9ish- any thoughts since this is a National Holiday? Is there a good chance I can get the general admission seats?There is a good chance that teh stadium will be sold out and no tickets are available. If possible, I recommend to visit on a regular weekday.
Evening - Shinjuku (Tokyo Metro. Building for views)
** I'm pretty sure it'll be open, but if anyone knows for sure (since it's National Holidays) it would be nice to have this confirmedIt is open on national holidays.
take luggage with me to Owadara and then use luggage shipping to my hotelI assume you are familiar with such a luggage shipping service. I am not familiar with it.
Any advice on what part of the loop I should try in the afternoon?If you arrive around 2/3, you won't have too much time left. You could take the train to Gora and then the bus to your hotel and visit maybe one sight of interest along the way.
Hakone Loop (again, suggestions on where to go, what to see)I recommend to pick places which you are personally interested in. Here are some suggestions:
http://www.japan-guide.com/e/e5200.htmlBus early morning to Takayama (7:50am)
- Worried about taking my luggage on the bus - Any thoughts?That should be no problem.
Bus to Johana station @ 11:22. Train to Takaoka then to Kanazawa (this is only because of the JR pass... is it more worthwhile just to stay on the bus to Takaoka?)There is no favorable transfer at Johana Station. You would have to wait over an hour for the next train departure. But the bus is also very slow. In the end, the bus connection would probably be about half an hour faster, I believe.
Mt. Aso -have pretty much worked out the schedule, however how much time around the crater/museum area do I need?Depending on the gas activities, it might not be possible to go up to the crater. If it is possible, most people only stay 15 minutes or so. The gas can be quite uncomfortable. Combined with the ropeway ride, one hour should be enough.
The volcano museum is not located near the crater, but along the bus route. You can walk from the lower ropeway station to the museum in about 45 minutes.
There is a basic map on the following page:
http://www.japan-guide.com/e/e4552.htmlHoyoland / Hyotan onsen?Hyotan Onsen for an average, nicely maintained public bath. Hoyoland for a somewhat run down, but rather unique onsen experience, including mud baths. It is a personal preference.