UCC is my alma mater, so I can give you some info on the college/uni (same thing in Ireland) and the city. I, however, did a BA there so my knowledge of their BCL is quite limited.
It's a small campus, in a small city, which has both positives and negatives attached. Also, although the campus itself is small, you will probably find that your lectures could be scattered all over the city.
Positives
1. You won't get lost or confused in Cork. It's practically impossible to do so, due to the size of the city, a day or two of wandering should give you a good idea of the place.
2. It's a small world - if you get involved in one society - the Law Soc, the German Soc, Dramat (Drama & Theatre Studies), the newspaper (currently The University Express I think), you will find that it will lead into knowing people in other clubs/societies.
3. There are plenty of nice pubs and restaurants in Cork, it's a nice place to go out and socialise.
Negatives
1. It's small, which may drive you insane.
2. As a previous poster mentioned, it can be cliquey. Many people went to primary school, secondary school and then onto university together. People in Ireland generally tend to go to their local university, unless they have a serious antipathy towards their hometown. However, that said, that was not my experience of UCC. I did know many people from my secondary school, but they didn't constitute the bulk of my college friends. Those came from my degree, and my extracurricular activities.
3. Although the college is physically small, there may be 200-300 in your Law lectures. Tutorials and class parties are the best ways to get to know people in your course.
4. The Library - Law students in UCC are notorious for being absolutely cut-throat. Guard your notes and articles with your life, while in the library. They are renowned for stealing books, tearing chapters and articles out of journals, and blacking out lines in books. You may have to buy many books yourself, due to lack of availability, so this will put a serious strain on your wallet.
As far as I know, most people in UCC do the straight Law degree (3 years), whereas those who do Law and Irish, Law and French, and Law and German are quite small groups so you will probably get to know those people very well.
If you have any general questions about the city, or the university, feel free to PM me.
Hope you enjoy your time in UCC!