Pros
This is a union, and your ability to work here is based on seniority, need and skills. You are not "hired", unless it is for a full time postion in one of the theaters, venues or convention center - but I am referring to the "on call" jobs that are assigned based on clients coming to town for conventions in the convention cetner. You are "hired" by visting or local AV companies, and you receive W-2 income, therefore you are eligible for unemployment compensation, which helps when there are periods of little or no work, which is common, especially during the months of December - March. The wages here are higher than what you will find in non-union positions.
Cons
Many people started immediately after high school, so in order to get ahead, people have to leave which rarely happens. There is much favoritism, and nepotism, and it changes with the shifting of the persons in the key positions in the office. There are some very difficult people to work with, and there is really nothing you can do, but endure it.