Ok, so bring lots of clean water (probably lots more than you think you'll need) but you don't need water filtration.  You don't have to worry about weight overall, so bring what you want,  but think about what to carry with you.  bring something waterproof (rain jacket/pants, but a plastic poncho or even trash bag will work in a pinch) and basically never leave camp without at least one extra warm layer,  just in case. If your feet ever give you problems, bring way more socks than you think you need. towels to leave in the vehicle. camp towels are nice, but with the car right there, no need. First aid kit. tons more, but that's my first thoughts. 

 ohh, i really need to get a proper first aid kit, good reminder

so many wonderful ideas here, thanks a bunch 💜