I encourage all gifted, intellectual teenagers to consider the University to be a kind of orange. The orange has a very attractive appearance, and it is true that many student mistake the beautiful and aromatic rind (scores of handsome young members-of-the-opposite sex, the parties, the booze,
The fruit of the University consists of its glorious resources: the lectures, the libraries, the language labs, the science labs, the gardens, the concerts, the plays, the practice rooms, the recordings, and the experts--both the older, experienced experts, who are professors, and the doctoral candidates who, despite their disheveled appearances, know more about (at very least) their thesis topic than anyone else in the world.
There are also the clubs, and I think these should be considered resources, too, if they involve some sport or skill, like debating or chess. Clubs that involve your philosophy or religion will be not just a resource but also a haven. I cannot imagine any Catholic, let alone a traditional Catholic, attempting a social life at the University without recourse to Catholic Chaplaincy or the Newman or some other place where likeminded Catholics gather.
Young people who share your core values are going to be your lifelong friends, and they are also the also the people with whom you are going to share wine and nachos (I'm thinking of the UK, where the drinking age is 18) at midnight while sharing what you've learned or arguing whether or not phenomenology is incompatible with Thomism. These late-night debates are, by the way, your part of the aromatic orange peel. The peel does have its place, just as orange zest has its place in cookery. In fact, let's call these intellectual and spiritual friendships the zest. With God's help, you can avoid the inedible white part--the hangovers, drama, mortal sins, and cultural Marxism--completely.
But don't forget what the orange is for: the fruit. Go to University with a clear goal in mind, whether to prepare for future medical studies, or to equip yourself for teaching Latin and Greek to homeschoolers, or to become completely fluent in two Modern Languages. The University has laid out a banquet for you: go in and eat it all up.
P.S. When I was an undergrad, people would sigh "I still don't know what I want to do" as if this were not deeply shameful. Know what you want to do when you go to uni. Adjust your plans later, if you must, but don't go in expecting to be entertained.