When I saw the play, there was no inapprobiate fan behaviour at all, no clapping or cheering in the scenes and at the end I found the applause rather short, I wished the audience had clapped much longer, but it´s probably a different tradition in Germany, here people tend to clapp for a long time, making the actors, singers, dancers come out again and again.
The audience was completely mixed, all ages and not significantly more women, mostly middle age couples or whole families.
And I can totally understand why Martin Freeman finds the role rather strenuous, the staging is quite physically and of course emotionally demanding and he is in almost every scene. And having only one day to recuperate and having to do two shows on 2 days per week must be exhausting. And then he´s addittionally doing stage door 2 or 3 nights a week and he is so lovely, so polite, friendly and patient with the fans.