Vacation Replacement

Sometimes you just know that you will not be able to get your moves/turns in for the next couple of days. It would be nice to be able to hand over the administration of your empire to the AI for predetermined amount of days.

Yeah, i know, most of the times when you will get back, your empire will lie in ruins because of your neighbours’ urge to help the AI in their administration…

Is there a widely agreed way how to handle vacation times when games are still running?
Right now i would say, i have to quit before leaving for several days.
Alternatives?