NoIt doesn't matter where I go, no matter if it's long or short, no matteor whether the destination is nice or not, but as long as it's just carefree.

When a vacation comes,Just when I think I have time, suddenly I have to be on duty, andor some office things need me to attend to discuss though I can not make a final decision,to be discussed or my mom needs me to look after the kids because the nanny takes a few days offis on the holiday.

The sentence is a little too long so I shortened it to make it sound more natural.

SometimesEven when I go out for a few days and was aI'm still in a hurry and with too much care full ofon my mind.

So I just want a vacation thatwhere I can be careless, free to spend my time as I wish.

I don't know whenif it will comeever happen.

I've been thinking about having/taking a carefree vacation.

But it seems that ithis has not come true.

An even smoother phrasing would be:

Unfortunately it seems as though this has not come true.

When a vacation comes, I have to be on dutycall, and some office things need me to attend to discuss although I can not make a final decision, or my mom needs me to look after her because the nanny takes a few days off on the holiday.

on call is the standard term

I would consider making this sentence into two sentences, it's a tad long.

Sometimes I go out for a few days and wasam all in a hurry and with too much care fullany things ofn my mind.

All though one can be carefree or careless, we wouldn't say that one is care.

So I just want a vacation that I can be careless, free to spend my time as I wish.

I don't know when ithis will come/happen.