Christchurch is a little bit tricky at the moment, with the aftermath of the earthquakes and all. A lot of things are still pretty ad hoc, even now. Five years ago, I could have recommended you dozens of places! Most of my favourites are now gone, sadly.
Fortunately, Riccarton (where the uni is) is a bit of a hub post quake, so there are a couple of places you might like. Try Joe's Garage for a great brunch: http://www.joes.co.nz/location.php?location_id=10
My fave cheap/cheerful/absolutely delicious restaurant was always Cookai (Japanese place) - which used to be in town, but post quake is in now found at 6 Nelson Street, Riccarton. I've dined there recently and it was as good as ever.
Black Betty - http://blackbetty.co.nz/ - in the CBD is fab, but might be a 10-min drive for you. Worth it though.
Piko Wholefoods - http://www.pikowholefoods.co.nz/ - is great for specialist stuff, otherwise the normal supermarket at Riccarton Mall is fine for staples (5 min drive from uni).
There was always good coffee at the uni campus cafes when I was there (especially the Law Cafe), but don't know what the status (especially of the Law School) is post-quake. I assume those places are still there, but worth checking. Might be an easy walk for you.
I honestly don't know the deal on food delivery in Riccarton - there will be some Asian fare of some kind and pizza. New Zealand isn't as big on food delivery as most Western countries I've visited, but there will be some (mostly cheap studenty fare, probably, considering it's Riccarton).
I guess the thing about Christchurch is that the landscape (eek, scuse the pun) is still changing so rapidly that new places are closing and popping up everywhere all the time. These recommendations are recent, but I'd recommend asking the locals what's currently good when you get there...
Hope that vaguely helps! Someone else might be able to be more specific.
Wellington local and cafe lover here - I've just given some recommendations to someone else on this thread: http://chowhound.chow.com/topics/830012
A lot of people take their kids to Maranui - it seems a really family-friendly place - but Fidel's should also be fine.
Hi - hope I'm not too late to be of help. I don't know if you've spent time in Wellington before, but one thing you should know is it's the city of the all-day brunch, and as such there are some amazing brunches to be had. In terms of recommendations, this is what I'd suggest as a local, which to me kind of sum up the Wellington vibe.
- If you don't mind an easy trip to the 'burbs/if you have time, grab a number 3 bus from the city centre and head out to the Maranui Cafe (http://www.maranuicafe.co.nz/) in Lyall Bay. The bay is beautiful and the food is good (good brunch/lunch menus, + cabinet food). It's then an easy bus trip back to town, although the buses only come every 15 mins or so, so it's worth looking them up here: http://www.metlink.org.nz/timetables/bus/003
- In town, Fidel's Cafe (http://www.fidelscafe.com/main.html) near the top of Cuba Street is a Wellington institution, and as well as the brunch and lunch menus, its cafe food and cakes are delicious. There's also space to sit outside if it's a nice day. Their milkshakes/smoothies/coffee are all amazing too.
- Sweet Mother's Kitchen (http://www.sweetmotherskitchen.co.nz/) is again a local favourite - very reasonably priced and delicious Creole food (also look out for the peanut butter milkshakes and key lime pie). No order is complete without their signature curly fries. It's at the Embassy end of Courtenay Place (again in town).
- If you're looking for something slightly more upmarket, Floriditas (http://www.floriditas.co.nz/) on Cuba Street is very popular. I think it definitely deserves its reputation, but because so many of the cheaper places are so good, I hardly ever end up actually eating there.
- If you just want a coffee, the best coffee in town (contentious statement alert!) is served at Memphis Belle (http://www.facebook.com/memphisbellec...) on Dixon Street.
Hope that helps - if you want to know anything more specific, just ask.
Sweet Mother's Kitchen
Memphis Belle Coffee House