Assume there's no storage at the ticket booth.

Probably not. Ticket booths are for selling tickets and maybe answering questions, not running a coat check. Even if a venue has lockers somewhere, they’re almost never right next to the booth.

If you’re bringing a stroller or a big backpack, plan on keeping it with you or stashing it in your car. Some places offer paid lockers near the entrance or bathrooms, but you’ll have to hunt for them. Don’t rely on a nice employee to watch your stuff — they won’t, and shouldn’t.

Best bet: check the venue’s website before you go. If they don’t mention storage, assume you’re carrying everything.