The venue also features rehearsal, break, and dressing rooms, as well as a private courtyard and a large loading dock that is shared with the Hamilton Convention Centre and the Ellen Fairclough Building.

FirstOntario Concert Hall is directly connected to the Hamilton Convention Centre via the theatre's main lobby, and shares a common outdoor plaza and sculpture court with the Convention Centre and the Art Gallery of Hamilton known as Commonwealth Square, located above Summers Lane, and accessible via the theatre's mezzanine.

[2] FirstOntario Concert Hall has hosted musicians and performing artists including Tony Bennett, Leonard Cohen, Morrissey, Chris de Burgh, Sarah McLachlan, Sharon, Lois & Bram, Tangerine Dream, The Proclaimers, Tori Amos, and The Tragically Hip.

Comedians Billy Connolly, Margaret Cho and Norm Macdonald have performed at the venue, as well as classic rockers Heart.

Theatrical runs have included performances of A Chorus Line, Evita and The Color Purple, in addition to dance-based shows such as Moulin Rouge: The Ballet and Michael Flatley's Lord of the Dance.