While walking through the park you're expected to stop and help guests if requested, so absolutely you should be getting paid. When I worked there as a kid you'd clock in at the admin building in the employee parking lot, then get your till (if applicable) and head to your location via the secret exit by the Gotham stadium. And you'd continue to be on the clock until you checked out at the same place you clocked in, which is right next to the employee parking lot