Everybody was in barracks at Ft Jackson. The higher the paygrade, the nicer the barracks, but they were still barracks. E-6 & below got the older open-bay, E-7 & above got the newer open-bay, O-5 & up got the "DV quarters", which were the same barracks but divided up into two-man rooms. I don't know if it's the same in WA, but wouldn't surprise me.
Assuming it's the same, show up like you're going to the Boat. Bring your own linens and whatnot, because what you're issued sucks. There was always a long line at the mini-PX that first Sunday night because no one realized how much of your own shit you had to bring.
And assuming it's the same rules, we did get weekend libs. They usually turned us loose on Saturday morning, be back for Monday 0600 formation.