No. I’ve never seen anyone charging anyone
Nope
Not to visit and walk the trails. If you're reserving a campsite, yes.
There's no charge to use the picnic area or hike but you have to pay for camping sites and probably the pavilion rental. There is a park ranger there to monitor things but no entrance fee
Yes absolutely there is a ranger at the entrance.
Nope. Never was when i grew up a few miles away, just visited again a month ago
Thanks! Your answer is awaiting moderation.