when kick me out the manager told me kidding, i heard that from other photographers , and even not a law, wonder why we dont respect them, they take time to design, what if people steal, and what if we took photo then find spot to steal ....... Just my 2 cents. Sue me if u want.
Anyway, can we go back to his question about which setting he should use.
dress like a tourist, bring a friend along, get friend to pose for picture, then quitely shift the shot to the left or right of your friend and take picture...then if guard coming, take a picture of friend so you can show to the guard that you are only taking holiday snap...