I saw it just 2 weeks ago through Rush. Rush line wasn't bad, but that theater was PACKED Saturday afternoon once I was in. It's also been an impossible lottery for me to win. I've often walked in the afternoon for Rush tickets and none were offered. Stubhub resale was always way higher than for other shows like Frozen.
With this anecdotal information, I was thinking the show was going gangbusters. Thus, I find the closing notice sad and interesting. I really enjoyed Christy Altomare (love her, even) and John Bolton.