What does the theater term sro mean?

SRO stands for "standing room only." It is used to indicate that all of the seats in a theater or auditorium are taken, and that anyone else who wishes to attend will have to stand. SRO performances are often sold at a lower price than regular tickets, as they are less desirable. However, they can also be a great way to experience a popular show, as they can be very exciting and energetic.