A Jujamcyn theatre, the St. James is another of the prize musical houses on Broadway. Like the Shubert, it's big but doesn't feel it. The main entrance is through wide doors to a spacious lobby.
Seats are comfortable.
The orchestra is not deep at all, so you'll always have a close view of the stage. If you tend toward claustrophobia, avoid the back rows because the mezzanine seems to hang lower than in other theatres.