i dont think that being a junior corps member exempts the reason to not cleaning the horn. when i marched i would try to wash it with me once a week and shined it when i got a chance or on a show day. even if you wanted to, its hard to neglet your horn because the valves would get dried one day, or there is some sunscreen on the bell, or theres dirt all over. cleaning is still going to happen on a daily basis or at least once weekly no matter what.