Place a sweatshirt in the bottom of your backpack for a day at the amusement park. The day may be warm, but the weather can cool down drastically as the sun goes down.
Take along a small first aid kit and a container of sunscreen to keep you safe while you are at the amusement park.
Pack sunglasses to keep sun out of your eyes while you stand in line for rides at the amusement park. Also bring along a hand towel to wipe the sweat out of your eyes.
Take plastic sandwhich baggies with you to water proof your cell phone and wallet at the amusement park. There are many water rides that will soak and ruin these items if they are not properly wrapped up.