How much it cost to entire that place

I does depend on what you want to do. We had 4 people doing the whole Zipline course, then 2 more doing those downhill sleds. Our bill was just over $500. There are much less expensive things to do though.

It depends on what you want to do. Parking was free for me.

It doesn't cost to get into the memorial, but parking is $10 per vehicle