hey beanie!
Bring 2 bags. One is your full pack with the SBO, helmet stuffed inside and another personal bag where u can dump your No.4, slippers, shorts, t-shirts and barang barang. Anyway, u may get to book out on the first day so at least u still can go home and get some stuff u miss out.
Dun forget to get a padlock for your locker but even if u dun have, the gift shop or emart will probably stock those locks.
Hmmm... your this ict sounds like my first one. The same stuff, inprocessing, weapon refresher training and range. After that, out-processed.