I just went on 25/9 (sat) through Tai Shu Wan - No checking wor - There is only one staff there who is very busy on helping the guest to insert the ticket into the machine. I have bb trolley and with one whole bag of food & snacks & soft drinks - for all seven persons (adult & child). Nobody ever checked.
Before I went to restaurant but the food is really expensive, especially we have lots of person.