So i'm travelling to Japan, what is there to do?

I'm going to Japan for a 2-week tour, and then i'm staying in Tokyo for a week after the tour finishes. What is there to do in Tokyo? Prices of nightclubs, drinks would be helpful ;) But also, is there any festivals or any traditional japanese shops/restaurants that are worth visiting? I want to... show more I'm going to Japan for a 2-week tour, and then i'm staying in Tokyo for a week after the tour finishes.

What is there to do in Tokyo? Prices of nightclubs, drinks would be helpful ;)
But also, is there any festivals or any traditional japanese shops/restaurants that are worth visiting?
I want to make the most of Japan!

I'm going on 5th-26th April.
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