Received email and saw on their Instagram story that the performance will be on for tonight!
Not sure about any cast absences, but I believe it would be mentioned if either Paulson or Fanning would be out as they’ve made announcements about them in the past.
Quick update for anyone curious: the full cast was in tonight, no understudies. The show was very good and went off without a hitch (no one performing seemed sick, this must’ve been more of a crew issue). You would’ve never guessed this was the first show performed since Saturday.