Small soft coolers are usually fine.

Yes, but check the specific park’s website first. Most theme parks allow small, soft-sided coolers (think lunchbox size, roughly 14x14x14 inches). Hard coolers and anything larger than that are almost always banned—they take up too much space and get used for sneaking in outside alcohol.

National parks and city parks don’t care. Bring whatever you want.

The real risk is forgetting the “soft-sided” rule at a corporate park. If you show up with a giant Igloo, you’ll be walking it back to the car. Save the hassle and check their bag policy before you load up the cheese sticks.