Where do you plan to drive?
If within Tokyo, the parking fees make it more expensive to drive than taking the train. The advantage is that you don't walk as much, but then again you could just take a cab.
If you're going out of Tokyo (i.e Yokohama or Hakone), just be prepared to pay exorbitant toll fees.
It takes about an hour of driving to get used to right-hand drive. Driving in Japan is generally stress-free as traffic isn't as bad as Manila's and people are more compliant to road rules.
Have tried driving in Japan and it's a fun experience driving a 90s legend in its hometown on a true touge. Not sure if it's as fun driving a minivan in the city.
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