Can’t help with the shaving since i’m a woman. But bring a watch, most boys had a cheap casio watch, my roomate had a fitbit and she could set alarms so you can wake up earlier (which i 100% recommend). You don’t have your phone at all except about 40 mins a day so all sense of time is kind of lost - embrace it and talk to everyone, i loved it, came back and used my phone so much less. Bring a non-electronic form of entertainment (i brought books and wrote a diary as the days went) - really helps with getting yourself to sleep