Many congratulations on your marriage.

祝贺你们喜结良缘.

Many , many congratulations on your marriage.

祝贺你们缔结良缘.

Please accept my congratulations on your marriage.

请接受我对您的新婚祝贺。

Please accept my heartiest congratulations on your marriage.

请接受我为你们喜结良缘表示的最热烈的祝贺.

Allow me to offer my heartiest congratulations on your marriage.

请允许我向你结婚表示最衷心的祝贺.

Hearty congratulations on your marriage best wish for your future happiness.

衷心祝贺你喜结良缘并祝将来幸福美满.

Congratulations on your marriage. I have waited for years to say this sentence.

恭喜你们结婚了. 我等着说这句话已经有好多年了.