Translation:I need a vacation.
You might also consider wa' DoS wIqIp. ("We hit one target."), meaning something like "We agree." I like to think of this as the Klingon equivalent of "Word!", though I suppose "We're on the same page." may be a more appropriate translation.
I do not use the term "have a vacation" and I don't think I've heard it before, but I wouldn't be surprised if there were English speakers that do use it. I don't see any potential for confusion and it's clear that someone using that phrase has understood the Klingon. I'll add it to the accepted translations.