The tour began in Providence this week. I saw it last night. The Providence Performing Arts Center holds about 3200. And it was pretty, if not completely full. The show was amazing. No issues and everything ran smoothly. The cast was great, if not quite as amazing as the original BWay leads, they were only marginally less so.
As far as grumpy's question on how well it would play to larger houses, the entire audience, leaped to their feet the moment the show ended and remained there, hooting and whistling throughout the curtain call.
Art has a double face, of expression and illusion.