Good pointers! The only thing I'm not sure of is if the cell phone will be useful as an alarm clock onboard. If you're not close enough to a tower (which is most of the time onboard), I'm not sure your phone will know what time it is to wake you up....Am I wrong about that?
Also, the wake up call service can be used for afternoon naps not just getting up in the morning...Wouldn't want to miss dinner...Probably haven't eaten for almost an hour!! lol