I know nothing about whether their Rush tickets were certain seats always held aside for each performance for that purpose, or whether it was all contingent on availability (and Ticketmaster seems to be indicating the closing is sold out).
I figured one of the in-the-know people on here might have asked at the box office about Rush possibilities for the closing, or at least have a sense of whether it's even worth the trip to the theatre to try for.
The rush doesn't say based on availability... but the house is completely sold out. So, yeah, seems a bit risky to go. Hard to imagine they wouldn't sell a full priced seat because they have to save it to make $30ish for general rush.
A Chorus Line revival played its final Broadway performance on August 17, 2008. The tour played its final performance on August 21, 2011. A new non-equity tour started in October 2012 played its final performance on March 23, 2013. Another non-equity tour launched on January 20, 2018. The tour ended its US run in Kansas City and then toured throughout Japan August & September 2018.