Well, heres where the travelling bit comes in..... I still didn't have much time to do much outside of uni, because of the 20+ contact hours and travelling 3-4 hrs a day (which you will probably be in a similar situation). But then I kinda worked my ass off all semester, so that played a part as well as the fact that the friends I made at uni were from the four different corners of melb/vic, so that just made it even harder to sort things out.
On the effort, I think as Pi did, that I put a lot more effort into uni than vce (even though I worked my ass off in VCE aswell), its was more that the content was harder, it didn't always just click on the spot. Although when I say 'effort', I'm counting how much energy it was taking to do things, which again included getting to uni, which sapped a lot of energy and took a lot of effort to get up at 5am or 6am to get to the 8am or 9am starts. Phy might remember me crashing and sleeping in the 8am computer lab one morning.
If you want to make time to do other stuff, you can still do it, its just a matter of working it out I guess. For me, I lost contact with most of my 'close' high school friends for reasons that I won't go into here, which just makes it harder. I choose to work hard though, and if there had of been more options there to do other things then I probably would have taken them.
I think what I'm saying is, travelling out from where we are isn't easy, and uni isn't easy, but its your choice on how you want to approach uni. For me I guess I worked really hard in first sem because I didn't know what it took to get what mark, and well that just carried into second semester and even the holidays.
(Not trying to scare you here, just letting you know that it probably won't be 'easy' with the travelling,
but still doable, also I probably got a little bit off topic).
Just remember that uni is about more than just marks, you should be enjoying your time as a young adult 
Remember this aswell, its fairly good advice. Don't go too anti-social in uni.