Physical damage from the quake in Tokyo was relatively minor - broken glass, falling tiles, etc. Thankfully no tsunami damage as Tokyo is in a bay. However, power cuts and radiation are a psychological drag. Restaurants see customers down 50%, it's dark as 2/3rds of street lamps are off, supermarkets are short on items such as water. People go home early, as train services are affected by power cuts. These are secondary effects on the economy.
Activity is not normal and a bit depressing. Radiation can't be seen, so a large element is how people react psychologically. However, it's amazing how calm and orderly the Japanese people are. No looting, just everyone trying to get over the hardship together.
We in Tokyo have little to complain. My heart goes out to people in the north. It's assumed Japan is rich and can cope easily - donations are much less than when disasters hit the developing world. But the truth for people on the ground is they have lost everything - homes, families, jobs, entire towns and way of life. They can't rebuild either with radiation ongoing. It sometimes snows and the shelters have no power to keep warm. Some old people die as it's too cold, or their high medicine runs out.
Please help where you can (buying Japanese headphones helps create jobs too!).