Do not cut your hair as stated above if you plan on having long hair following graduation. I have hair down to my bum and I managed just fine. Shower at night, put your hair in a bun before bed. Wake up, kick ass, start over again. Cutting your hair requires a lot of maintenance and the NEX can't cut hair for shit in Newport so every time you get a trim to keep it in regs, it will be crooked. In addition, staff has been requiring short-hair females pin their hair out of their faces for PT anyway. So you still have extra work required. It's better you just learn a bun now and how to maintain it for the fleet so you don't look like hammered garbage like a lot of females walking around do.
You are permitted a small blowdryer at OCS. I would blowdry the underneath of my hair before doing my bun at night and I never had any issues with fungal infections on your nape hairline like some women did. You are not taught how to do your hair at OCS. But you will absolutely be penalized for your hair looking like trash. So you need to practice before you go, show up knowing how. Your hair will also be worn in a bun and never down, so your uniform being wet is never a concern. I am confused about this line of questioning.
Edit: You have to do your bun before bed as there is just not time in the mornings