Valid points, but you can do all sorts of great things:

1.- You get crypto back on each time you come back
2.- Partnerships with crypto projects give airdrops to people who assisted to your park
3.- You create games that mine crypto currency with the kinetic energy and give the money to the people assisting to the park that day.
4.- You can get ads with brave browser inside of the park and the resources come back to the people.

It might be the first park that charges you and refunds you 70% worth of your tickets, jeje

So many possibilities.