So what do I do? Set at least two alarms to go off! I have a phone and a tablet, and each of the has an alarm app. It feels a little like self-punishment for a few minutes, but after a quick shower, I am ready to face the world.
I recommend that you back time from the place you want to be when the sun comes up. There are several useful apps and websites that can tell you when the sun is rising in your area. Plan to be there at least 30 minutes before that time so you can catch the light also before sunrise.