I attended a performance in the Sala Isouard "operetta evening" series when I guess there were around 300 guests in the two rooms, plus the performers.
Most of the guests were middle-aged or older persons.
When the performance was over, it took around 20 minutes to empty the rooms in an orderly pace.
Has anyone imagined how evacuation would be in case there were smoke or a fire alarm? I did not notice any fire escape possibilities. I did not notice any emergency lights. I did not notice any fire extinguishers. I fear that the underlying courtyard with bar and electric appliances might be a fire/smoke hazard.
It would be well advised to have the place checked for emergency evacuations and fire hazards by the fire brigade!