Translation:I am on vacation on Kronos.
A great example of the unsuffixed verb as opposed to the imperfect: I wrongly put "I am vacationing on Kronos," which should be Qo'noSDaq jIghIQtaH.
Although now I see "I am on vacation on Kronos" is listed as the preferred answer. In my dialect of English, that is a direct synonym for my "I am vacationing." I must admit that I liked the very general translation I was given of "I vacation on Kronos."
I have to agree with James, below: "I am vacationing on Kronos," and "I am on vacation on Kronos," mean the same thing. They really do.