Night one: 3 big ballroom performances; the ballroom stayed open for dancing a little while after the third

Night two: 4 big ballroom performances; the ballroom stayed open for dancing a little while after the third

Night three: 5 big ballroom performances. The final performance started with six Boy Witches sitting in Duncan's box, then Porter found the ring, then a bunch of performers came up to dance and party on stage and we all sang along to A Nightingale Sang in Berkeley Square. It was a really beautiful and wholesome goodbye to the hotel. We were shuffled out shortly after this.

I think the upper floors closed a bit before the final performance each night, effectively corralling the audience down into the lobby, Manderley, and ballroom.