Jetlag Bargainer asks: “Which will I regret more, sleeping through everything that happens early in the morning or sleeping through everything that happens late at night?”
Fortunately, there’s no need to worry about that! At the 25C3, the first talks begin at 11:30, and generally wrap up by 0:00. This means you have plenty of time to catch lots of great talks, have an awesome time partying at C-base and get a good 8 hours of sleep.
However, if you’re feeling sluggish, you can always catch an hour long nap between 15:00 and 16:00 and between 19:30 and 20:30 each day. (Some folks choose to call these lunch and dinner breaks).
Of course, this does not apply to those participating in the CTF contest who will be force-fed Club-Mate from 18:00 on Day 3 to at 02:00 on Day 4.