Get a lesson to start out and take lessons until you can ski the whole mountain comfortably. This will make you feel much more confident just skiing around and in the park. You won't regret taking lessons.
Would you rather fight 100 duck sized horses or 1 horse sized duck?-Clyde
Send it ya kooter
Improve your skis durability by avoiding metal objects, trees, and rocks.- Ginko
You'll have the most fun if you learn to ski correctly. In other words, take lessons. Most of us long-time skiers took our lessons when we were really young, and I know it feels fucking lame taking lessons as a teenager, but it's the only way to learn properly.
Yeah.. Skiing takes years to perfect, you don't want to be one of those guys who has no basic skiing skills in the park, if you're pizza'ing in the back seat on your inrun, you're not gonna have a good time. My advice, take plenty of lessons, learn how to carve/work your skis properly, maybe try skiing some bumps/steeps, THEN venture into the lil park and start hitting boxes/small rails and jumps.
Or just fuck it and start hacking your first day. It's your decision, just some friendly advise!