You must read the playbill for Nothing's On before the show. You must appreciate the setup of stage direction in the first part of the first act. You must pee beforehand on peril of stress incontinence. I am not usually one for slapstick, but my face and belly hurt from laughing during the overwhelming choreography of the "behind the scenes" portion. You will want to watch each and every player carefully-- in sum, their performances are actually multiplicative. Although the effect is perceived chaos, you too will enjoy the precision with which it is executed. May you attend the show and always have a plate (or five) of sardines.