So despite losing the online lotto this past Saturday, I was able to walk up to the box office at 5pm and get a rush ticket ($42). The couple in front of me also got rush tickets and the older couple waiting in the lobby then inquired about them after I bought. Rush tickets were in the front side orchestra, rows B & C. So there doesn't seem to be a need to arrive early, you can probably arrive when the box office opens at 10am.
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.