Yeah, I really am lucky. The scholarship I got was only given out to 25 students around the country, and it was a full-ride free scholarship, at that. I guess someone must have really liked my essay.
When I came there, it's hard to say, as everything was such a blur because I really didn't understand much. Gradually, though, I formed friendships with people and of course, in their minds I assume I was always known foremost as a "gaijin," and second as a "friend," but with a year, there is only so much one can do to eliminate barriers like that.
My high school never offered Japanese as a language and there weren't any private schools around, nor did I have the money to attend any language camps, so before I went to Japan, all I could was try and cram as much of the language into my head on my own. I managed to learn hiragana and katakana, and some basic kanji, but that was it. Advanced sentence structures were still impossible for me.
I went during the second half of my junior year, and stayed through the first half of my senior year, and then came back in january of 2005. I think I was a really different person when I came back...being "alone" in a country like that really forces you to assume some level of independence. Not only that, but getting out of wherever your homeland is will really broaden your mental horizons. I recommend it to everyone, and it doesn't just have to be Japan, there's tons of other great countries to explore.
Oh yeah, and about bentos...it's not really that hard to cook Japanese stuff, you just need the right ingredients, like any cuisine. If you use the wrong ingredients (for example, Americanized "Japanese"-style food that's far from what it should be) then it's not going to taste right.