I'll give it a shot...
I graduated bmq on the 27th of Jan.. 77 echo.. YAR! heh..you won't know what that means unless you were there. heh...
Anyway, I suppose the right answer to this is yes you get free time, you get what you 'need', basically. After you are confined to base for the first 3 weeks you get your weekend off, if your course doesn't mess up and you earn it. You will get to leave the base or stay, it's up to you...usually from then on you get your weekends off to do whatever you want, usually to go blow your whole paycheck in Montreal at dirty hotels and sleezy strip joints, or you can stay and blow your money some other way...somehow..you never seem to be able to keep money saved... Anyways, besides weekends off, your day during the week (unless in the field) usually ends around 5 or 6, depending on the schedule. You'll go to supper then the night is yours to prepare for the next day. Now it varies so much from day to day, but usually by the last few weeks of the course, you have alot more free time because you have yourself organized and prepared, but in the first 2 3 weeks, you are always busy even after you go upstairs to your cube, preparing for inspections or doing homework or studying. For example in week one I remember being up even past lights out working on my kit, when in say..week 5, I would be done all my stuff for the next day around say 7pm..so I'd have 3 or 4 hours to myself, depending on when I wanted to go to bed...
You aren't constantly working 24/7, you do get breaks between classes during the day, and you get weekends off, so I guess the answer is, you get however much time you 'need' off.