Any admission fee

No entrance/parking fee. They utilize "fun cards" for everything from attractions to the game room. No more tokens or tickets.

There is no fee to enter the park. Only to play

Yes. All money is put on a card.

There is fee to enter the park. You only pay for the rides and food.

I'm not sure about any admission fees. I went there as part of a work picnic once and i didn't have to pay, but that was only because it was already paid by the company... Sorry i couldn't be of any help.