Without being too extravagant you can get by with 5000 to 10000 yen per day on lunch and dinner including transportation/subway/rail. That's about $50.00 to $100.00 in American dollars (minimizing taxi usage). Try to avoid the taxi's because that could cost a small fortune, especially in rush hour.
The popular referendum is a device which allows voters to approve or repeal an act of the Legislature. If the Legislature passes a law that voters do not approve of, they may gather signatures to demand a popular vote on the law.
House Passes Bill Eliminating Senate Approval of Presidential Appointments. By a vote of 261-116, the House of Representatives passed a bill rewriting Article II of the Constitution and divesting the Senate of the power to accept or reject the appointment of many presidential nominees. Last year, the Senate passed the measure by a vote of 79-20, so it now goes to the desk of President Obama for his signature.