I want to make your 6 days in Japan the best time possible. Please tell me in detail where you want to go, what you want to do, what you'd like to go, things you are interested in, and which Japanese and Chinese food you like.
この日本での私との六日間最高に楽しんでもらうために計画を立てたいから行ってみたい所、やりたいこと、買いたいもの、興味のあるものの名前、日本料理と中国料理で何が好きを詳しく教えて欲しい
I want to make plans to make your 6 days in Japan the best time possible. Please tell me in detail where you want to go, what you want to do, what you'd like to go, things you are interested in, and which Japanese and Chinese food you like.
ただ、上記だと長文で読みづらくなってしまいますため、メールなどで各場合は下記のように過剰が気にすると親切だと思います。
To make plans to make your 6 days with us the best time possible, please let us know the following:
この日本での私との六日間最高に楽しんでもらうために計画を立てたいので下記のことを教えてください。
- Places you want to go to. 行ってみたい所
- Things you would like to do. やりたいこと
- Things you would like to buy. 買いたいもの
- Things you are interested in. 興味のあるものの名前
- Your favorite Japanese and Chinese dishes.日本料理と中国料理で何が好き
六日間最高に楽しんでもらう＝make your 6 days with us the best time possible
日本 
