Ocs
as far as leave, you are allowed to go up to 15 days "in the hole", which means negative leave balance, and you accrue 8 days while at OCS, so you can take a maximum of 23 days after OCS, which of course most guys do. The basket leave option was eliminated pretty recently I think. Sleep- dont plan on more than about 5 hours a night. ESPECIALLY in the first few weeks. I remember the first couple weeks getting like 3 hours a night, and just being dead tired all the time. Towards the middle and end of the cycle, you get more sleep though. honestly, lack of sleep wont be too much of a problem. you stay so busy, the only time you actually notice how tired you are is during classes. classroom 3 was ridiculous for staying awake, all you 2nd LT's out there know exactly what Im talking about.
Also, I was in 3rd platoon. we couldnt drill worth ****, got our asses handed to us in pugil sticks, but we DOMINATED tug of war.