Kabeiroi, which the company Punchdrunk says is a “theatrical adventure” inspired by the surviving fragments of Aeschylus’s play of that name, will require each pair of audience members (no singletons allowed) to travel to various venues around London (transit fare not included) and spend much of the time outdoors and/or on their feet. Warning: “This production is not suitable for women at any stage of pregnancy [or] individuals who are claustrophobic or have a nervous disposition.”