Can I survive in Japan with 100000 yen?
Can I survive in Japan with 100000 yen? 100,000 yen should be sufficient, excluding your accommodations, transportations and theme park admissions, unless you're expecting to buy an expensive souvenir. I would carry a credit card for peace of mind. 100,000 Yen is roughly 1000USD and it should cover your 12 days.
Is $10,000 enough for Japan?
Most major tourist destinations have websites that list costs of activities. Do some planning, make a list or spreadsheet and get out a calculator and see what it will cost you. I could easily make $10k last for a month in Japan, but everyone travels a bit different and has different tastes.
Is 100000 yen enough for 2 weeks in Japan?
Sounds like it should be enough. Of course it really depends how expensive you want to eat, how many times you will move around a day, and most likely your not buying lots of stuff everyday. If you want to save on food, you can target Lunch as the main spending as there is usually good Lunch Sets for really good deal.