Watching plays, mostly. Pickpockets might engage in pickpocketing, and prostitutes might solicit for customers, and food sellers would sell food and drink. But these weren't really the audience. The audience was there to watch the play.
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They did it outside.
the frons scenae
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peanut gallery
They did it outside.
the frons scenae
A thrust stage. It went out into the audience.
In a modern theatre the audience sits opposite to the stage. In the globe the audience sits (partly) around the stage, in the manner of the ancient Greek theatres.
If the audience didn't like the play they wouldn't clap to it.
the flag went up
By social class. The poor stood on the ground.
The Modern Globe theatre is based on the original design from Shakespears' time - so forget the heating. The audience is mainly standing, but there is some seating in the galleries.