Is there valet parking

Don't think so. Ample underground parking.

Not directly at Microsoft Theatre, no.

Not sure, depends on the events happening that night. I do recommend you arrive early, as parking lot fills up quick.

Depends on event.

Yes

If there was, I didn't see it. Depends on the event I suppose.

I believe so but not 100%. We paid $40 to park last month when we went and saw George Lopez