I went to Rikkyo University. I stayed in dorms. I'm not fluent, more like Intermediate to Advanced. Many people who came to my program didn't know very much or any Japanese at all. Although most people don't speak English well if at all, signs and stuff are in English and everyone got used to daily life Japanese after a while. Most of the people who got sick of Japan were actually mostly very good at Japanese, but they hated aspects of Japanese life or culture (especially how they treat foreigners) and just couldn't get used to them.
If you're in Tokyo, cost of living is really high. It's currently the highest in the world, with Osaka second. If you're in a smaller city like Hiroshima or the countryside, your cost of living will drastically drop (especially any rent) but food, clothing, and transportation all seem to be the same level of expensive countrywide. Of course, like anywhere else, you have to shop for sales and deals; you just seem to come across them less often there. ;P
Great...Osaka is the 2nd most expensive part of Japan.Funny how that's exactly where I plan to go.

I kind of expected it, and you gave me some tips earlier. I'll just have to work on saving up. All the paper work just went in today! Hopefully I got it.
I'm thinking about studying abroad in Japan during the winter session in January 2010, it's actually kind of short, it's only a month long. I really do want to go but I'm not sure if I'm really ready, since i'll be away from home for an entire month in a foreign country...but then again, i do want to gain more experience and independence lol I don't know if I should wait 'till I gain more experience n such, n go during my senior yr? Or does it really matter what year you're in? If i want to go, I have to apply ASAP since the deadline is next month plus, i'm also worried about the financial side; tuition is quite expensive and i heard getting a scholarship/grants are very competitive...sorry for writing so much~
A month, I would say would be a good test period to see if you really want to go for a whole semester. I haven't gone yet, and I'm going for the whole she-bang, only because I've already been in college for a while and a change of scenery is far past due. I would say, if you're starting out as a freshman, give it a year (wait till' at least your sophmore year) that way a) you have time to go back if you like it (for like, half the cost of going on your own with scholarships opportunities

You'll be used to doing things on your own (for the most part), especially if you stay in the dorms. This way, when all of your resources are
ripped right from underneath you gone when you study abroad you won't panic.

No, I was kidding about that last part. Since you will be traveling with friends, I think this is the best way go.