I was in PLC Jr/Sr, so maybe the company level organization was a little different, but here are the differences that I found:
(most from seniors)
taps was 2200, and reveille was 0500 (that's 7 hours) and we usually dimmed the lights til about 2330 to square away stuff and prep for the next day. I averaged maybe 5.5 hours of sleep during the training weeks (accounting for fire watch and such), and closer to 4.5 if I was in a billet of squad leader or higher.
Chow was usually before PT (if you have PT after chow, make sure you don't eat the greasy stuff or drink milk).
Longest hump was more like 13 miles (but the hardest one was the 5 or 7 mile hump becuase of the hills and pace)
For seniors, or for OCC candidates, know your 5 paragraph order well, and know your general orders.
Hope this helps and good luck,
-itoh