I'm in Sydney, but it looks like this place might be an option for you with 5 locations.
If you really want to simplify your life, you might consider mono-mealing with bananas. That's easily affordable for $50 (at least if their prices are as good as Sydney's). I've paid between $9 and $24 for 13kg of bananas, depending on the season. Maybe you can call them to see what they're charging by the box so you know in advance.
If you buy 3 boxes now (ideally, an "overripe" box will be discounted for you + 2 yellow banana boxes), you can eat/smoothie them as they get ripe and fridge/freeze the last of them before you leave for Japan. The skins will get dark in the fridge but the innards will be delicious.