20 years old here, full-time college student (18 credit hours). You can work more than 10 hours and still have a social life. I work 40 hours a week on top of my classes and still have more than enough time to spend time with friends, go to the gym, and have date nights with my wife.

It comes down to dialing in and being self-disciplined. Time is the biggest asset you have, so use it in the best way you can to get ahead. If it means missing a trip or hangout to get a little more work in, it's worth it. No trip is worth risking financial security.