Don't worry, they aren't banning everything. You can still bring a small, clear bag with your phone, wallet, sunscreen, and maybe a tiny snack. A lot of people bring a tiny crossbody bag or a fanny pack that isn’t clear—that's usually fine if it’s very small (like the size of your hand).
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But remember: no big coolers, no huge backpacks, and definitely no glass bottles. They want you to have fun, not juggle a giant duffel bag while riding the American Thunder. Keep it light, keep it clear, and you’re golden.