Even if Mraz needed a month to get ready, they wouldn't be pulling their lead actress to rehearse for a month. Most of the time, replacements don't perform with the rest of the cast until their put in. But even in alternative cases, they would only have rehearse a time or two withthe actual leads.
If we're not having fun, then why are we doing it?
These are DISCUSSION boards, not mutual admiration boards. Discussion only occurs when we are willing to hear what others are thinking, regardless of whether it is alignment to our own thoughts.