No, at least not during my visit.
The performance that I attended had 5 audience members participate on stage... they were approached by the actors during dinner and asked if the were willing to do it.
As part of the show? Not that I know of. As audience participation? Yes.
I believe it depends on the play. My husband got selected a few years back to participate and in the most recent dinner show they had children as crowd participants.
Unknown to me.
No not at this time
No standins or extras asked for publically at the performance i attended
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