Change from 10,000 Yen not always possible
Sometimes, taxi drivers will not be able to provide change from a 10,000 Yen note, so either make sure you have smaller notes (1,000 or 5,000 or the 2,000 Yen note to commemorate the Year 2,000), or most taxis will take credit cards with no problem. (Visa, Mastercard etc)

Steve
United Kingdom