Archived:ThreePlusOrMinusNGaijinInABoat

To be a plan to get to Japan without all that tedious mucking about in Siberspace
To include a trip to Korea, because all Japan and no non-Japan makes Jack a dull weeaboo
To be of duration similar to PlanN
To occur at a similar time of year to PlanN
To have an aeroplane at both ends of it

Osaka
Hiroshima
Tokyo
Kyoto
- http://www.jnto.go.jp/eng/attractions/event/traditionalevents/a14_fes_sagicho.html is about the right time and could be interesting
Hot Springs

The "Beetle" ferry goes from Fukuoka, Fukuoka (so Asian they named it twice) to what we are now supposed to call "Busan" in S Korea. But as the United Nations could tell you, it is a bloody long way from Pusan to Seoul (heavy Chinese and DPRK resistance not shown), so if we are to go anywhere interesting in Korea it cannot be a mere day trip. Indeed I (Smith) can quite see Korea expanding into an almost equal partner in this putative coalition, because we may find that there isn't so much in Japan to, ah, occupy our attention (inb4 Manchuria)
As shown here, North Korea is no longer a possible day-trip from Seoul, but the DMZ is. It almost certainly does not justify more than this, because, well, while it's OK to visit, you wouldn't want to live or indeed spend significant amounts of time there due to the complete lack of anything to do and the rapid dropoff in the novelty value
- The currently-suspended trips to the DPRK proper (to Kaesong and Kumgangsan) may, however, resume between now and ~March, depending on lolitics
  - But it occurs to me (Smith) that they are likely to be expensive, and having flown to Japan and ferried to Korea already, we should once again take pains to avoid the committing the Phoenician Error
I (Smith, though also valid for anyone) have not crafted an itinerary yet