Hotel alarm clocks can be a source of traveler frustration. I have seen tips about checking the alarm setting so you don’t get rudely woken up at 5:00AM. There is also the AM vs. PM issue on some clocks that needs to be checked. One tip I do not usually see is probably the most important and probably most overlooked. TIP: Check to see that the time is set exactly the way you want it and are used to – 10 minutes off in the wrong direction and you could just miss that airport shuttle bus.