skebumwdude im 15 work 2 jobs one at Brighton 1 at a trampoline park down town and i get around everywhere using the bus, trax, frontrunner, and my bike and long board if you dont wanna rent just get a hotel close to trax or a buss stop and you can get anywhere, I can go anywhere from lagoon (45 mins north of slc) clear downt to provo (1.5 hours south of slc) without touching a car same goes for any of the pcmr resorts, the big 4 and sundance, but dont go to sundance its shit, just making the point that you could.
The bus to pc kinda sucks imo it's made for workers not tourists. If you had a car/when you are old enough to drive, I bet 99 times out of 100 you'll drive.
Anyways I'd say rent a car. If it's too expensive see if your parents can put it in their name and add you on or something. If you go public transit for your whole trip, you're gonna spend half our trip on busses and trains.