"Born to Rock" Show is now showing on MSC for Me - Different than the Rock Circus

[tbmrt]

I was checking my phone app for MSC and it now shows "Born to Rock", a show in the  main Broadway Theater.  Says you need a reservation.  (This is different than Rock Circus where you can reserve and pay now).

 

Does anyone know how this works?  Need to get a reservation before embarkation day?

[CruisinMaterial]

I'm assuming this is on a US based ship? I saw this show on the MSC Poesia recently and I didn't have to make any reservations. It is just a production show they have in the main theater. However, the theater might also be larger on the MSC Poesia holding more guests. It was never completely full during any of the shows of my sailing. On the larger ships you still need to book your showtimes based on your dining time. That happens when you're on the ship.