This is more for work research than personal knowledge, and it obviously depends on the region, but I'm curious about what you'd expect to pay for this:

1.5 hour party at a carousel (it's a big local attraction, inside, wooden, not like a "fair" carousel). Up to 12 "participants" included. Adults not generally counted in that number unless riding most of the time without a child. No food (we add the cost of food to the base party without profit, so that amount doesn't change), but people can bring in their own food. A party host. Plates, forks, napkins, balloons. Rides are constantly available/included. We are open to the public, but party guests have first shot at it. Most people decorate minimally if at all.

So given all of that information, what would you expect to pay?