Questions about current Broadway shows

I haven’t seen any of the shows below but I’ve listened to the soundtracks and I’m curious how certain parts are staged. (If anybody reading has similar questions about these or other shows, please feel free to tack them on.)
Avenue Q- in the “Give Us Your Money” song, do they collect real money from the audience?

Wicked (a musical that has no synopses) In the Dancine Through Life number, what happens when Bok says “Let’s Dance!” to Nessa? Does he whirl her in her wheelchair? Also, is it ever revealed that

the Wizard is Galinda’s father?

And how is “Defying Gravity” staged? I’ve heard it’s dazzling.

No you haven’t.

You’ve listened to the cast recordings.

Off-Broadway, yes. They did. I’ll have to check with my sister about the Broadway version.