If there's any secret, it's to balance school and play to what you like.
In my University fun file, my couple started off as engaged - he's going to go military first, then go into politics after (which matches his story); she's going into business first, then become a mother (which matches hers). In the first 2 week term, I had them loaded up on classes. M/W/F was pure heck for them, but T/Th was easier because of the one activity. I used the mornings on those to have them watch TV, play video games, throw a frisbee around, go bowling. Same thing on S/Su. Their second term was only 1 week, 1 class (that's all they needed), and it was much more relaxed. I also used Study Hard once a day for them.
I tried the parties, but it tanked their metrics so fast!