Knowing for certain only one thing, namely there will be no stage magic. Since there is operative magic in the world, it would be like trying to fake a clock or something on stage in ours.
There are jugglers, and a kind of tightrope walker -- operative magic means you have to make it more impressive, a dance on spiderweb, but still a tightrope walker -- and dancing bears, and a fortune teller (prediction being a weak branch of magic, not respectable at all), and. . . hmmm. . . tame animal shows, but much more impressive than ours because -- ta da! -- you can use magic.
Perhaps a pageant. There were traveling companies of actors, and it's the sort of world where those things are not sharply distinguished.
That does, however, need a story that will serve the (not very nice) purposes of the trope, and furthermore, echo the themes of the novel. hmmm