The floor of the auditorium was flat not sloping, because the theatre was also used for dancing. The ground floor was 'the pit', and behind that a higher level was divided into 'boxes'. At the back was a raised section forming the open 'gallery'. All the seats were backless benches, though season ticket holders for the boxes had the privilege of providing their own chairs.  

Between the audience in 'the pit' and the stage was a space for a small orchestra usually consisting of a few violins and a piano; additional musicians were added when plays had more musical content. The musicians played the overtures, and interludes between two or more plays on the bill. They also accompanied songs and dances in the plays, and filled in during act breaks.

The curtain in front of the stage was drawn like a festoon when the play started and was lowered between the acts to cover scene changes. The stage floor was flat and extended beyond the curtain line so that a song, a sailor's horn-pipe, or a ballet piece could be given in front of the curtain between the acts of the plays.

Lighting was supplied by candelabra hanging from the ceiling of the auditorium and the stage, and by candles in brackets on the theatre walls and in front of the boxes. These would remain lit throughout the performance as was customary at that time. There were also foot-lights or "floats," which were lighted wicks floating in small containers of oil sunk in a groove at the front of the stage floor. The floats did not have glass shades, and on occasion set fire to the wooden floor at the front of the stage.

Backstage things were very cramped. There was a supply of standard 'flats' portraying the most usual sets such as a street scene or a room in a house. For very special productions extra 'flats' might be painted. With the scenery in place working space was limited and was further reduced by the presence backstage of favoured gentlemen of the town; one company in 1782 presumably made itself unpopular by announcing that gentlemen of the audience would in future be denied admission backstage because their presence was impeding the performances.