Thank you so much! I am going to the five finger death Punch concert!
For each event, they post the rules and guidelines on their website specific for the event. Many times it's USC that throws an event here and you need to go to their website to specifically know what you can't bring. USC is known as very strict and they always provide a full list, which is quite large of things you can or cannot bring. In summary, regardless of what event is being hosted here, you need to go to their specific exact website because every event has varying rules, which are conveniently posted on their website for all to view.
For the campground: Factory sealed bottles, no glass, no open flames, no weapons, no drones, no drugs. For the venue: it will depend heavily on what event you are going to, some allow chairs some don't, some let in sealed snacks and water, some don't.
All bottles must be clear or factory sealed. Your bags should be clear so they don't have to search through it. No open gum, or cigarettes, they have to be new/sealed. Your question might be easier to answer if you asked what you're specifically worried about bringing. They have a section on this on their website. It's not the most specific though.
Thanks! Your answer is awaiting moderation.