How should you ask for time off during the interview process?

 

Believe it or not, but you may very well find yourself in this situation someday. Maybe you already have. You are making a job change but you have plans for time off already set in stone. So how do you bring that up during the interview process?

The first question precedes this. Should you even share that at all? I've had many candidates bring this up throughout the years. What do you think?