I think probably most people would have their fill after about an hour. In our event, stay did seem unlimited - not sure if they all work that way.
Yea, agree it is pricey. We would not have splurged on it in other times, but this year it was good to have a local “something different”. And this year, we certainly did spend less than anticipated (actually nada) on international travel. For a young friend tight on funds it was a big disappointment.