That terminal (which is the main one) feels like a maze if you've never been in it before. And, IIRC, there are actually two trams at that terminal. One for the domestic side and one for the international side (I could be wrong about that since I've never personally been on the international side as I've never left the country). Plus there's a station for an LRT line that services both terminals on its way between the Mall of America and Downtown Minneapolis.
Weather wise, UM-TC is a bit warmer than UND as it stands, and there's more to do in Minneapolis than in Grand Forks. Also picking UND is choosing to be on the wrong side of a college hockey rivalry. The only right side in a college hockey rivalry is UMTC's side, or at least the side that's not UND or UW-Madison.