Theme park lockers exist but aren't cheap.

Yes, almost every major theme park offers lockers or bag check, but the cost adds up fast.

You’re looking at $10–$20 per day for a standard locker, sometimes more near popular rides. Most parks also have size limits—small lockers won’t fit a full backpack, let alone luggage. Large lockers (for carry-on sized bags) are rarer and can hit $25+.

Bag check (like a coat check) is less common—Disney World, Universal, and some Six Flags locations have it near the front gate, usually priced similarly to lockers. But expect long lines during peak hours. Also, almost no park lets you store anything overnight. They clear everything out at closing.

If you’re staying nearby, drop your stuff at the hotel first. It’s cheaper and you won’t have to trek back to the entrance.