Pros
This is a big show, and you will learn a lot and challenge yourself. Anime Expo is an industry platform that could help you to get connections and/or the experience to hone in on what direction you'd like to go in next. I worked with enthusiastic and amazing people who wanted this job to be the best it could be, which is why the below is so unfortunate.
Cons
People who do not like anime or respect anime fans hold leadership positions and only begrudgingly listen to anyone who understands the fanbase. Unbelievably low pay - if you do not have a roommate, a live-in partner, or a second source of income, you will suffer. Management punishes you for speaking up about anything - complaining is seen as poor sportsmanship and considered a sign that you can't handle your job. Anyone who quits is seen as a traitor - try bringing up their name, see what happens. There is blatant employee favoritism. It doesn't matter how much you contribute, or how competent and exceptional you may be at your job. Management expects you to "prove" yourself through cult-like devotion to the company and the work, rather than just letting you do the job you were hired to do. Try reasoning with the CEO - it's like talking to Agent Smith from The Matrix. He says "hold the line" because if you cross it he will literally gaslight you into a reality that does not exist and is not sustainable for anybody other than himself while he leeches off of your lifeforce through the pod he traps you in in Corona. Some people in the organization are the human equivalent of Crebain. If you still decide to work here, be careful who you complain to. They'll just report back to Mordor.