Regardlesss of the discussion on the legality of allowing chicks in your room....
Just don't do it. Get a hotel room, rent a weekend B and B, whatever...
Back to the larger subject...
Learn all you can, ask questions, work hard, and it will probably be one of the best Navy experiences you will have in the pipeline.
I am going out on a limb and say you will be working M-F 0700-whenever your LPO tells you to leave, so I am going to go out on a limb and say, square away your uniform, show up early, bust your ass, make your LPO look good, and then be cut loose with plenty of daylight. Be a model sailor on duty.
If you are on some sort of quarterdeck watch rotation, well, you kinda get stuck on some rotation.
If you are assigned to the Fireschool, be prepared to sweat your ass off and be covered in Purple K powder etc, but the guys who run the school are not nukes, so just try and be not-nuke, work hard for them, and I am sure it will be a cake 4 months. You will probably learn all kinds of stuff about DC equipment, Fire and Flooding, which will be valuable information when you get to the fleet.
And last but not least:
Don't bring chicks into your BEQ, ever.