I lost the majority of weight in my last year of University (I lived on campus).
My school had a very flexible eating plan so I could pick and choose what I wanted. I asked for smaller portions of rice and stuff too when that stuff was served to me.
I kept some Lean Cuisines in my freezer in my dorm and nuked those some of the time. I also always ate breakfast in my room. I used my campus gym contsantly too.
Also since it was my last eyar I pretty much abstained from alcohol and just had a bagel or whateever when my friends would order pizza. I would still sit with them and gossip, they didn't care what I ate.
Anyways good luck, I lost about 70lbs in my last year of Uni!
Cheers!
Ali