What we carry varies from trip to trip. Last trip all days we carried a backpack and some days we had the video camera too. The backpack carried batteries for the camera and the walkie talkies, rain ponchos, regular camera, walkie talkies, usually 6 rolls of film, pennies and quarters for the presses, tissues, Advil, Immodium, Neosporin, Bandaids, 2 changes of socks, 2 shirts in case either of us had to change, tampons, glow/blinking jewelry, my laminated self made guide to the parks, cereal bars, chewing gum, a clean washcloth in a bag, water bottles, and tiny wearable personal fans. That was a lot of stuff, but 95% of it got used at some point. We wore sunglasses and hats everyday.
This coming trip we are praying for no rain. December shouldn't be as hot at late September was last year. I plan on traveling much lighter and using the lockers at the parks. The fee is worth it. I determined that the last day we were at the parks. lol
Our carry around bag this year will have a camera, 2-3 rolls of film, batteries for the camera, Advil, glow/blinking jewlery, pennies and quarters for the presses, and our self made park guide. Rain ponchos will be carried only if the weather stinks. I hope it's good this time! We will take a second bag to leave in a locker with warmer/cooler shirts, a change of socks for each of us, various travel meds, and whatever else seems appropriate.
I believe in being prepared. But, I also believe in travelling light. Not that you can always tell that. lol Mickey