YOU SAID:
i want to go to japan for my holiday
INTO JAPANESE
私は私の休日に日本に行きたいです
BACK INTO ENGLISH
I want to go to Japan on my holiday
INTO JAPANESE
私は休暇に日本に行きたいです
BACK INTO ENGLISH
I want to go to Japan on vacation
INTO JAPANESE
休暇に日本に行きたい
BACK INTO ENGLISH
I want to go to Japan on vacation
That didn't even make that much sense in English.