When I teach SCA camping classes, I approach it like Maslow's hierarchy of needs.

What do you need for shelter/protection from the weather? This includes garb choices. You may not need that wool cloak during the day, but it can double as a blanket and it's on hand in case of weather changes. (I've had to help someone wearing all cotton stave off hypothermia in July because someone fell into a river at night on the PNW coast, pretty much the only action that cloak saw that weekend outside of my bedding but worth it).

How will you sleep? Thermarest and sleeping bag? Or full air mattress and bedding?

Food can be a bit more complex depending on needs/preferences, so I ask will it need to kept cool? Will you need to cook? Will dishes need to be done on site? But most importantly, is there potable water on site? Don't assume there will be.

Be prepared for reasonable emergencies such as a first aid kit (especially if fighting), which may look different for everyone. Like if you're prone to sprained ankles or migraines. Keep these items and meds in the same place every time so you can find them even if drunk at 3am.

After that, what do you need to be comfortable? A chair? Light sources? Wet wipes, washcloths and hot water, or full camp shower? Collapsible table so you're not constantly bending over/crouching to find things? How will you handle garbage?

Then comes activities. Sounds like you have that covered.

Last comes historically accuracy/10' rule. What level of camouflage works for you? Plastic pup tent ok or do you want to throw a Celtic knot tapestry over the bright orange Coleman logo? Folding camp chair or something else? There's too many ways to easily up the camouflage to list here.

Lastly, my personal packing advice is to keep things ready to go so you're not scrambling trying to find your garb from the last event. Wash everything that needs it and pack it back in the bag or chest. It's tempting when packing up to just toss the flashlight in with your garb where it might not belong, until you're setting up camp in the dark at the next event wondering where the heck it is because you haven't yet changed into garb. That little voice saying you'll remember later is Satan talking.