How to start? Spending after settling in Japan

I am planning to live with my husband in Japan next year, visa approval permitting. I know that for the first 5 years if I don’t remit any foreign currency to Japan then I can continue to earn interest on my tax-free savings in my home country, but I want to know how people who take advantage of this cope when they first move and likely don’t have a Japan-based job yet?

It’s not possible to open a Japanese bank account until settled so there would be a period where overseas-sourced funding would be needed, so a remit.
Or could you use a Wise/Revolut-type bank account to load up on yen BEFORE entering Japan and just spend that? Or take yen in cash to Japan (within the customs limit I guess).

I’d love to know what is the usual “done” thing in these situations.

by rainbowdrops1991