YOU SAID:
Champagne is delightful, don't you agree?
INTO JAPANESE
シャンパンは楽しいです、あなたが同意しないか。
BACK INTO ENGLISH
Champagne is fun, don't you agree?.
INTO JAPANESE
シャンパンは楽しく、あなたが同意しないか。
BACK INTO ENGLISH
Champagne is fun, don't you agree?.
That didn't even make that much sense in English.