Getting up early isn't really a problem. The DI's are not wandering around the battallion. They will stay in their office if they are in the building (Or they will mash the Officer Candidate on Duty but that's another story). Yes it is breaking the rules, but it is what's required. So is staying up after taps to polish shoes, study, etc. Again, you do what is required to get the job done. You do have an opportunity after PT to shower. Sometimes before chow, sometimes after, that depends on you place in line for chow. Sometimes they will only give you 10 minutes to get showered up. You get very efficient!