Well, honestly, lab is one of the most boring thing you will ever do in college. Our labs usually start in a formation, we wait, and wait, and wait, until the CO comes out. Then we go into a classroom, hear the BCO,BXO, OpsO, etc...make announcments, then we do a GMT (General Military Training). GMT is something you will do throughout your military career, so get used to it. They vary from Sexual Harrassment, Force Protection, Anti Terrorism, OpSec, Fraternization, etc.... Then you may have some drill practice, company/platoon time, and thats it.
Basically, it is the battallions time to play military
My favorite parts of NROTC are PT,Semper Fi, and the camraderie (sp?). I dont mind wearing the uniform either, kinda makes me proud (even though it is a Navy uni) :icon_rage
But dont worry, you'll have fun, it is what you make of it.
Good Luck