Even if you do end up in the Mezz they are also a really great view. I was in the dead last row but saw everything famously. Agreed...it's not exactly a show reliant on nuance, so I wouldn't say sitting in orchestra seats is "crucial" to the enjoyment of the show. The view from the mezzanine is really pretty great.
But as with almost every show, yes, sitting in the orchestra is preferable. If you have the choice, which apparently you do, I would go with the orchestra seats. It's always nicer to be on the level of the actors, even if it's not essential.
"If there is going to be a restoration fee, there should also be a Renaissance fee, a Middle Ages fee and a Dark Ages fee. Someone must have men in the back room making up names, euphemisms for profit."
(Emanuel Azenberg)