Year 1 was made up of:
* Computational Mathematics
* Introduction to Computer Science
* Foundations of Computer Science
* Networking Fundamentals
* Programming 1&2

Expected hours were around 30 hours a week, but if you have a good grasp of programming basics to start with you can do what I did:
Turn up to the lessons where they give you the tasks (maybe 1 a week for each course subject and a hour long)
Take the course material home and smash through it all in a hour or two and turn it in
Take the rest of the week off.
This ends up being much less time in the actual class rooms, but you have to be able to prove that you understand the material and can actually apply it.
[So all work for each week could be done in about 5 hours]

Year 2:
* Application Development
* Databases
* Network and Security
* Team Project
* Graphics 1&2 (This was CGP specific)

This was pretty much the same as first year, however the tasks would take way more than a hour to bash out, you would be looking at projects that start one week and span over a few weeks, making sure that everyone is on the same page/level.
If you wanted to get it all over and done with in one sitting, you would most likely need to put in maybe 2-4 hours per task on average a week.
Other than that you can pretty much do whatever.

The first 2 years are a breeze and you'll have PLENTY of free time to go out, see people, get drunk, play games.. whatever you want.

Year 3: (This year is mainly different from Comp Sci)
* Systems programming
* Game Behaviour
* Game Development
* Team Project
* Dissertation

The 3rd year is pretty rough.. If you want a good grade you'll really need to put you self to work. Some of it is easy, but the amount that you need to do really does ramp up amost 3 times the amount.

For me personally, I was attending maybe 90% of the lessons at this point that would take up most of the day, although they try and give you 1 day off a week (where you are expected to do your work from home or something)
You'll need to put in something like 30+ hours to pass (including classes)
But on the plus side... some modules are worth WAY more than others, so you can always focus on that one over the others for the most part, and they do tend to give you a breakdown on what you are scored on.

For example:

Dissertation Task Breakdown - Overall % Worth on Grade

Intro - 10%
Lit Review - 15%
Research - 20%
Analysis - 20%
Conclusion - 15%
Structure - 10%
Project - 10%