Absolutely! Hokkaido has many beautiful places to see. You may not be able to see all of them in one trip, however. It is best to choose one or two locations. I recommend Hakodate.

How about finding an English speaking clinic? They are centered mostly around Tokyo, but it might be a good start to look them up in your city.

A source of mold is not letting it air out, so putting it out in the sun is a very good idea. Once a week at least is best. Also if you get a lifted wooden platform to put under your futon instead of ...

I lost something that had my name on it and the station called me. I don't know what you lost though. But you're not dumb for losing something. It happens to all of us. 

Not everyone. Many breakfast buffets at hotels will offer both options to accomodate everyone.

Yes, there are some! The big one in Shinjuku is open on the weekends if you're in Tokyo.

Yes, it can be much cheaper depending on the length of time you choose. It also saves you from filling up your card all the time. If you can read Japanese, use this link https://www.navitime.co.jp/tra...

You could go to the CD shops if it's fairly recent. But if not, then ordering it online is an option. Your friend can also find it themselves if necessary. CDJapan ships overseas.

Yes, the weddings can get quite expensive to attend. The general rule is 30,000 yen from people who are single, 50,000 yen from a couple. Make sure to get new bills at the bank or post office and buy ...

Yes. Being invited to someone's home is considered a big deal, so you should bring something. A lot of people will buy things like dessert (if you're going for tea or a meal) or fruits.