With this we can expect an increase in tourist visits to Japan.
Will there be an increase in the number of tourists just because they start accepting bitcoin,i really do not think so,it is really a convenience that they will be accepting bitcoin and summer Olympics being hosted by Japan it will be a real booster for the bitcoin enthusiasts as well as the visitors to carry a secure method of transaction rather than carrying cash,over all it is a good move by Japan.
Yes I think it will not attract tourists by using bitcoin as a mode of payment but Japan will use bitcoin because they are adapting to it. It might affect the value of bitcoin in the market because there will be an increase in demand. And other countries most likely will do the same.