I think your going to have to build a system to help incentivize the Bitcoin Aspect to your Carnival. I believe a system similar to Dave and Busters or Boomers will help you build proper revenue from small time stuff like what your more or less offering. Something like Allowing Fiat as well as Bitcoin but offering a significant discount for using Bitcoin only. Maybe a 40% markup? Dave and Busters used to charge a certain amount for tokens and such to play the games, but whenever they upgraded the machines with card readers they gave stupid discounts for "Game Time" cards. That way they were able to sell off the token machines to old bowling alleys and such, i go to a laundromat that uses a Boomers Token machine to dispense change. besides that, in all honesty if you expect to charge a high dollar amount for the entrance you need to have a Legit ass carnival, like clowns elephants, all that. And potentially some amazing rides that can build to suit. They have some cool roller coasters that like go and then come back that can be rented i believe. But its like millions. But if its going to similar to a county fair then you have to keep it under 20 or else no one will care.