I'm going! But only for a half. But I'm from here, if you have any questions you can PM me.
There is a lot near SMU's campus, if you cross the highway there is a shopping/eating center called Mockingbird Station (Mockingbird is the street that runs into SMU) some casual restaurants there if you want a bite before the game.
Some great restaurants in Dallas...the Knox/Henderson area is pretty close to campus and has great restaurants. The Porch, Sissy's, Mr. Mesero are all good. Good casual bars/nightlife over there too.
Don't know where you are staying, but Neighborhood Services on Lovers and Inwood (I don't know if they take reservations) is delicious. Bubba's Fried Chicken on Hillcrest right across from campus is really good but very casual.
Tex-Mex in Dallas is usually pretty good, so is BBQ (Pecan Lodge in Deep Ellum is the best, second is probably Lockhart in the Oak Cliff area.)
I actually don't think that Dallas will be that crazy, the football game is actually in Arlington, about 30 minutes outside Dallas and much closer to Fort Worth. ESPN broadcasts from Fort Worth and when the Super Bowl was here a few years ago most people seemed to stay there instead of Dallas.