It's 11 o'clock

Yes ❗

It is closed at 20:30! It is closed at 21:00 on sale!

I think it was always from b-5, I'm using it because there is an elevator in front of the ticket gate, I can see it immediately after going out on the ground, but I think that there was a sign of a passageway in the direction of B-5, August The 19th is a closed day.

Unfortunately not. It seems that it only seems to use mail order which is on official site of Muji.

I can't grasp the contents a little... For the Tokyo Metropolitan Museum of Art, every third Wednesday. If you have an official ID card that you are 65 years old or older, it seems that only you can enter without admission (excluding special exhibitions). You can search for various discounts and conditions by searching for "Senior Discount".