My first audition camp for the 2008 season i was REALLY freaked out about the showering thing. So i too had the bright idea of "getting up earlier than everyone else", but going to bed ad 12:30ish then taking an hour or so away from sleeping is not the best plan of attack. I found that out really quick.
First of all your already more tired than you have ever been before due to the physically and mentally strenuous rehearsals, so losing any bit of sleep will come back to bite you in the butt...SOOOOO the point of this long tangent is yea it's kinda weird at first, but everyone's practically naked on the field during tour anyway, so just relax, and "just do it" you'll get used to it faster than you think. and believe me, you DON'T want to be the smelly kid, we tend to avoid them at ALL costs!