RSVP begins with a greeting delivered over an MP3 player out in front of the OReilly Theatre on Great Denmark St. We’re not off to play, but a teenagers party and if anybody asks why we’re there, we’re supposed to tell them we know Enda.

Our guide Rosa took us down the laneways and backstreets behind Dorset Street,  talking incessantly about Enda, before guiding us to the headquarters of Dublin Youth Theatre, where with the help of trailblazing immersive UK theatre group Coney,  a booze-free party is at full blast. As a guest at the party, the audience enters the performance, and one’s experience of  RSVP hinges on their ability to imagine themselves as a teenager and enter the fray. (I was a rugby-playing Clongowes student who met Enda at kickboxing class.)

The party itself was populated by members of Dublin Youth Theatre, engaging, energised young people who brim with a confidence about the future. In between conversations and cartwheeling contests, they broke into a collective chorus of Fun’s ‘We Are Young’ or an interpretative dance to a Kylie Minogue song. In the basement, we watched video recordings of the cast’s messages to their older selves. Enda never arrived, but the party was still memorable without him.

Star rating: ★★★★