Backpack Must-Haves for a day at KI

my family goes to King's Island once a year so we are there from open to close. To lessen trips to the car or leaving the park, what would you recommend we pack and carry around with us? here's our running list

  1. single use gatorade powder packets
  2. external battery and charging wire for cell phone
  3. extra pair of socks
  4. sunblock
  5. non-chocolate snacks (that wont melt)
  6. poncho on cloudy days
  7. empty water bottle to use at refill stations
  8. penny press album