What is the difference between reserved and unreserved seating?

Venues usually have "reserved seating or allocated seating." This means you are given a row and a seat number and therefore know before the event where you will be seated. You must remain in the seat allocated to you throughout the event. You are unable to sit in a different seat or row. A few venues or events have "unreserved" or "general admission" seating. This means that we cannot guarantee where you will be sitting. The first people to enter the venue will get the choice of where to sit. You are able to sit or stand in a designated area for those who have general admission tickets.