I’m not sure where your sister lives, but I don’t think she’s not going to call the police if I walked into her living room with my shoes on. They’d probably get me for trespassing or breaking and entering. /S
I know what you mean about the sneaking food into theaters. They’d just ask you to throw it away /put it in your car / or just leave. Source: first job was a theater. Now if you refused, it would likely be an officer that throws you out on a Friday/Saturday as they hired off duty officers to be around those nights for security purposes. Used to keep the K9 for the K9 units in the birthday room because we felt bad they would leave them in the running car all night in Central Florida. Surprised a few employees when they went to grab something and were startled by a happy go lucky Shepherd/Malamute.
They were very on or off duty dogs. In the car, work mode, and ready to go to war. In the birthday party room, you better be ready for pets and snuggles.