Host's Request is a term used to describe the expectations of a host for their guests. It typically includes three components: SIT, STAY, and RSVP. SIT refers to the expectation that guests will take a seat and remain seated during the event. STAY refers to the expectation that guests will remain at the event until it has concluded. RSVP stands for 'repondez s'il vous plaît, ' which is French for 'please respond, ' and is an expectation that guests will respond to the invitation in a timely manner.