I mean, this isn’t surprising. In fact, I think more shows should be doing this - there’s several, several people who saw Sweeney (prior to this new cast) somewhere between 30 and 80 something times.
It’s a fine line, though. You don’t want to encourage unhealthy fan/actor dynamics (a la Sweeney) but people who basically shell out a full paycheck’s worth a year or more on ONE show should get a little something, IMO.
I am big. It’s the REVIVALS that got small.