Society treasurer Bernadette Hay said the celebration had attracted a "great turnout", with old friends meeting up to share memories with families and children coming to experience the theatre.
Among those attending were four of the society’s life members, Brian McCormack, Di Shirley, Doug Leggett and Ray Williams, who were acknowledged for their contribution to the society’s long history, she said.
"It was very special to have them there."
Saturday afternoon’s events included a display of memorabilia, a presentation on the history of the society by Mr Leggett, a costume catwalk showcasing the theatre’s vast collection, high tea and mini tours.
Contacted by The Star, Mr Leggett said theatre on the Taieri dated back to the 1880s, and remained one of the main forms of entertainment for people until the advent of television.
The Taieri Dramatic Society was founded by Mosgiel Players leader Catherine Taylor and a group of fellow theatre lovers in 1948 and put on its first play, After October, a year later.
In the 1990s the roof was repaired and in the 2010s the front of house and auditorium were remodelled, making the theatre the cosy, welcoming space it was today, he said.
Mr Leggett has been involved with the theatre since 1996, taking part in more than 30 plays.
"I love my theatre, and the Fire Station Theatre has always been a great place to be," he said.
Mrs Hay said the 75th anniversary celebration was "a great way to highlight the history of the society and the theatre and to talk about the future".
"We have built up a strong reputation as a good space for emerging performers to develop their skills in a supportive environment, and we are very pleased to have a strong contingent of young people involved," she said.
Into the future, the society was keen to develop relationships with other local theatre groups and encourage them to use the theatre and was looking to revitalise its costume hire service, she said.
