Understood, I was just mentioning that based on the OP the desired outcome that was being sought is a state where nothing comes through except for calls and texts (not that they could be checked later, but that they actually come through). This particular scenario, while certainly a valid one and a good one for situations of this sort, wouldn't quite address the part about calls and texts coming through unfortunately.When your phone is turned off, texts still come trough after you switch it back on and if people are not smart enough to leave a quick message on voice mail, they should just not call you in the first place, or just try again later if it's that important.
Sometimes, it's quite healthy not to be reachable for a while.