[lmm]

You could've takyubin'd one or two bags to a convenience store in Tokyo and collected them once you got off the shinkansen. They basically add an arbitrary extra day to the time if you're sending to an airport, in case it gets delayed.

[kmeisthax]

I checked Yamato Transport's website the day they told me it'd take four days to get my bags to the airport. Turns out they were backed up on packages coming out of Kyushu[0].

The next time I take a trip to Japan I'll probably just ship bags to the airport a week in advance and have them held there.

[0] Hoenn