i haven't been to ocs yet but i want to pass on a few things my recruiter mentioned when i was asking similar questions, maybe some of you can validate these points
1) money - he said you get a 'uniform allowance' while at ocs, and you pretty much are issued a bunch of stuff up to a certain amount of money (2 thousand maybe) and you have to pay for anything you want after that, plus other people have mentioned having a random need for stuff sometime so its good to have cash around
2) running - believe it or not, some people aren't prepared when they go to ocs, in some cases its that their recruiter simply didnt explain to them how much running they would be doing or in other cases ive heard where the oc took the attitude of 'oh they will just get me in shape when im down there', so in those cases i can see how people can get shin splints from running, otherwise i dunno, my recruiter told me i should be able to run 3 or 4 miles at an 8 minute/mile pace, expect to run 4 times a week (i think its mon, wed, fri, sat) and your runs will be anywhere from 1.5 to 5 miles, maybe people get shin splints because in addition to running they are drilling and running obstacle course (uneven ground) or just generally on their feet a lot, or some combination of all, anyways, if anyone can confirm or deny any of what i said that would be cool
"Peace over anger, honor over hate, strength over fear."