[kulahan]

You've never accidentally slept through an alarm before? Why not have a backup plan just to be extra sure? That sounds perfectly responsible to me.

[njarboe]

Sure, but your backup plan probably should not involve one of your parents getting up extra early to give you a wake up call. But to each their own, I guess.

[disgruntledphd2]

This is one of the reasons that pre-booking taxis is a good idea. Typically, they'll call you when they arrive, so they are a really good back-up alarm clock.