I would do DisneySea over Disneyland if you already have Disneyland in your own country. It's very aesthetic and you can drink alcohol there too!

Some people will say you will regret it if you don't visit Kyoto. It's quite essential for understanding Japan, its history and culture. I thought it was amazing! And there's so much to se...

Hakone is fun, but most people stay there overnight. I've done day trips where I've gone to museums and the lake during the day, went to an onsen, ate dinner and then headed home.

Just a note about the convenience store umbrellas - everyone has an identical one, so sometimes they get taken if you leave it in an umbrella stand outside a shop.

In major cities, there are a lot of English signs and maps. But once you leave those areas, there's less and less.

Can you order them online? You can check if they have it in your size there. But I know a lot of foreigners have a hard time finding shoes in their size if their feet are on the bigger side.

I'm studying for it too! (Barely passed N3 tho lol...) I'm using online grammar worksheets. Just google N2 grammar

You can check the box on your form at the airport when you leave. The best thing is, the line for customs for re-entry is super short. You don't have to stand in line with tourists.

I don't know how young you mean, but lots of high school girls hang out in Harajuku and Shibuya. But college students hang out in different areas like Shinjuku, Ikebukuro, near their schools.

A lot of companies do offer visa sponsorship but it depends on what you want to do. English teaching companies definitely do. For other industries, you have to check.