For someone so naive I cannot bring myself to joke nor jest.
Yes, they get paid. Everyone who works for Broadway gets paid (with the exception of certain intern positions).
The United States has child labor laws that not only require anyone younger than 18 receive compensation, but they also have restrictions as to the amount of hours they can work, breaks, education, supervision, physical labor, etc.
"The Spectacle has, indeed, an emotional attraction of its own, but, of all the parts, it is the least artistic, and connected least with the art of poetry. For the power of Tragedy, we may be sure, is felt even apart from representation and actors. Besides, the production of spectacular effects depends more on the art of the stage machinist than on that of the poet."
--Aristotle