Most of the Hamptons , HGI's, and Homewood's I've stayed in have the same type alarm clock that you can't change the time (unless you have your little screw driver and know how to take the faceplate off to adjust). The last two hotels I was in the time was off; one 48 minutes slow, and this stay exactly 12 hours off; i.e. am and pm time were reversed. While not getting woken in the middle of the night, you won't get your alarm on time if am/pm is wrong, so I always verify this. And always set a wakeup call and/or phone reminder too if it's for an early flight.