Dev,
I park there all the time in the summer months when it is much busier and I have never had a problem. I had trouble with my car and had to leave it parked there for two weeks. No ticket no break in and no problems. The drive through Lake Arrowhead is gorgous and totally worth the hike. The hike is memorizing during early spring. You see all sorts of animals and beautiful flowers. I say go for it. Great work out as well!! Enjoy. I'm jelouse. Lol