it sounds like you don't want to be bothered with late night annoying calls and text messages. some phones if you set the alarm and turn the phone off the alarm will wake up the phone and in return wake you up as well. not the raphael. so take this approach.
Set your alarm for whatever time you want to wake up. Then go to your 'Settings Tab' and click 'Phone Off'. Why do this?
- it's going to save all of the text messages you receive at night
- it will let you have full function outside of your internet and receiving/calling ability
- your phone is actually off to everyone else but you. its like your invisible.
hope that helps