A friend of a friend goes there and from what I've heard it's pretty chill for the OC's.  You wear your normal Navy uniform, attend PT, and drill once a week.  For the most part you are separated from the "Corps of Cadets" or whatever they call it.  My buddy is married, so I don't know how a single dude would fare.  This is all second hand info and I can't give you the details of the day to day stuff.  
 
FWIW, an engineering degree in STA-21 is tough. I'm only telling you that because I had zero college when I started and am completing Mech E in 33 months. I feel like I've been rushed through the curriculum, and would like to have had more time to absorb the material and get a better idea of engineering in general. I would still do it if I had the choice again, but would have used my time more wisely in my freshman/sophomore semesters. Good luck...
				
			FWIW, an engineering degree in STA-21 is tough. I'm only telling you that because I had zero college when I started and am completing Mech E in 33 months. I feel like I've been rushed through the curriculum, and would like to have had more time to absorb the material and get a better idea of engineering in general. I would still do it if I had the choice again, but would have used my time more wisely in my freshman/sophomore semesters. Good luck...