Other than maintaining a high minimum GPA in order to get into grad school... and spending over 40 hours a week studying on top of 20+ hours of classes and labs... and going into debt (I'm lucky here, undergrad should only run me $40,000) for the next ten years... ...
But the fun totally makes up for it!!! All those parties I can't attend due to studying all night... all that beer I can't drink because I have to go the gym the next morning after my exam and 4 hour lab... all those girls I don't see because I'm stuck inside the experimental physics lab all day... ...
... ...
LOL, college is whatever you make it. Sometime I wish I could do the fun stuff, but there would be an overwelming feeling of dissatisfaction that I could not live with.