I don’t find Japan as expensive as some people have said it is — I use the subway as much as possible and eat at the Japanese places. It’s really great food at affordable prices.
When you get paid, you take your money out and put it in a secret hiding spot in your cupboard. That’s how I sent money home, because money just vanishes here.
You should try to hang around at your in-laws’ house and drink lots of malt liquor. It’s much cheaper than buying beer.
I don’t take taxis. I find it cheaper here compared to 10 years ago, except for transportation. If you get together a group of people and go to an izakaya, it’s cheaper than a restaurant, and more fun.
Don’t buy alcoholic beverages from a bar in Japan. Instead, carry a backpack with budget supermarket drinks, and pour them into a glass inconspicuously.
During the summer I worked at a summer school so I saved lots of money. I usually go shopping in the States ‘cos it’s cheaper, and when I do go shopping here, I take my mum with me.