Reserved seating

In live entertainment, there are several possible schemes for the seating assignment of spectators. There are several schemes which are most commonly used, though there are no hard and fast rules and alternate or modified schemes are sometimes used as is suitable to the event.

In a purely reserved seating (also known as allocated seating or assigned seating) scheme, each ticket is assigned a specific seat in the venue at the time of purchase. Seats are typically identified by row number/letter, seat number, and sometimes by section.

Reserved seating is the most common scheme used for large indoor venues such as stadia, arenas, and larger theatres. It is also common at other venues, as are other seating schemes, such as outdoor amphitheatres.

In a general admission (also known as open seating or free seating) scheme, each spectator has a ticket. However, the location from which they will watch the event is determined upon arrival at the venue. General admission is most commonly employed in seat-less venues, such as outdoor festival shows and smaller club shows. It is also sometimes used in seat-less sections of events that would otherwise have reserved seating (standing-room only sections, including the floor section(s) at some concerts). In some general admission events, a ticket may still assign the holder a specific section of the venue (e.g., balcony or floor), with the choice of seat within that section.

General admission can also refer to a scheme in which seating is available; however, it is not pre-assigned. Typically in this scheme, seat selection is on a first-come, first-served basis. A common example of this scheme is most movie theatres in the United States.

General admission events may be ticketed with no assigned seat number, or it may be purely first-come, first-served, in which the first certain number of people in line are admitted (either as a free event, or paying at the door/gate). Due to the first-come, first-served nature of the seating selection, line-ups may still form for pre-ticketed events.

Festival seating typically refers to the form of general admission (first-come, first-served) in which there is a large open area (generally outdoors) and all spectators must stand (unless they are permitted to bring their own portable seating). Many music acts use festival seating because it allows the most enthusiastic fans to get near the stage and generate excitement for the rest of the crowd. Some performers and bands insist on a festival seating area near the stage.

...
Wikipedia