I'll probably have missed a few things, but whatever.
December 24 - Snacks: 1001 yen
December 25 - Bread, gyoza, snacks: 3459 yen
December 26 - Baumkuchen, waffles, drinks: 2599 yen
December 27 - Coffee, KFC, drinks: 2817 yen
Sum total
- xx,xxx yen == AUD $yyy @ zz.z yen/dollar
- yy AUD in stuff outside Japan
About $yyy in food all up