You don't need custom ROMs. I use an app called Volume Ace and have set up four different 'profiles' one of which I've called "Silent". I have the app's widget on my home screen and at night I turn my phone to silent with two simple taps. In the morning I put it back to 'Normal", again with two simple taps. I received the three alerts as well but wasn't woken up as they didn't override the app settings.
Aredwood: Im assuming that your reference to 1984 is in relation to Macrovision on videotapes.
He's referring to the George Orwell novel.