Yes

I think they have it in the bookstore inside the mitsuwa.they have a whole lot of items like that.

I am sure they do. It's a standard item if a Japanese grocery store.

Yes. At the station in front of the cash registers

Yes, the best place (ramen) still is. There's a freestanding ATM machine, if you're willing to pay fees.

Yes, and yes check the packaging

11am to 7:30pm

They sell Japanese beers and sake.

Yes, the bookstore (Kinokuniya) inside sells manga, anime figurines & merch (especially lots of Studio Ghibli stuff). In the candy aisle of the grocery store they also sometimes sell anime themed candies with prizes/small figures inside.

Yes they do,they have an awesome collection of mochi rice cakes!!😎😊