It was quite difficult to find wi-fi outside of UNNC. If you really need it, get an android device that can tether it's 3G signal to make it into a wireless router. That way you can have wi-fi wherever you go. That's what I did, they gave us a phone with the internet package you have to get at the beginning that could do just that.
Is there any reason why you need to have wifi away from UNNC? I did the majority of my studying on campus. The wi-fi on campus before i left was in all class rooms and the library as well as the Robin Hood restaurant. There was wi-fi in the common room but it disappeared during the year. There's wi-fi in the international dormitory however you need that phone i was talking about earlier to use it. The internet situation is a bit of joke to be honest! Hopefully they have improved it by the time i get back!