Its "critical darling" status, short preview period, and limited engagement (thru Labor Day for now) should help in the beginning, but I'm curious how the Broadway word-of-mouth will be, especially with more traditional theatergoers. It's not your Grandma's OKLAHOMA, but they still need your Grandma's money and chatter.
Regardless of sales, I think it will bag a bunch of nominations, and right now it's a frontrunner to win Best Revival of a Musical, Best Director, and Orchestrations.