To answer your question: The Traitors is filmed over a relatively short, intensive period, typically spanning a few weeks, with many days of extended shooting (often long days into late hours) in a single castle/location for each series. Individual contestants usually spend only about five to six days on camera for their main participation, though this can vary by country and season, and production sometimes adds non-shooting days for wrap/hosting logistics. The first few days often involve introductions, initial challenges, and the round-table/murder sequence, which set the pace for the rest of the episodes. These filming blocks are designed to condense all game components—introductions, challenges, social play, and banishments—into a tight schedule, with crews coordinating long hours to capture the evolving dynamics. [Overall filming span: a few weeks; specific cast/staff days: commonly multiple days with lengthy shoots]
