[masaegu]

Originally Posted by PocketMonster

　What should the particle be for 旅かんをとまります and 日本語がならいたい？

旅かんに
日本語を

Also, for しておかなくちゃ, we just learned how to say doing something in preparation for which is the verb おきる. On the requirements for the essay, one of the things we have to write in the essay is: What you will do in preparation for the trip (using ~ておきます、~ておかなくちゃ
いけません、~ておくつもりです etc.) <<That is one of the exact sentences written in the requirements. So I assume that it is okay to write しておかなくちゃ.

If it is required, it is required. I will not fight city hall. I wonder if your teacher is a native speker, though.

It is just we Japanese-speakers DO NOT use 「なくちゃ」 in a composition as it sounds very conversational (and even childish) . We would use 「なくては」.

For あきはばらで買い 物に行きます, I thought that the particle で was used to describe a place of action. And I would be shopping in Akihabara.

But the main verb is 行く in this phrase and 「行く」 takes 「へ/に」, never 「で」.

You can say 「あきはばらで買い物をする。」 but you cannot say 「あきはばらで買い 物に行きます」.

Instead of 日本レストランで食べるつもりです, how would I say: I plan to eat at restaurants in Japan? Instead of in Japanese restaurants.

「日本のレストランで食事をしたいです。」 or 「～～をするつもりです」.