If there is one thing I’ve learned from the “El Chapo” series is that bribery works. It kept Chapo Guzman away from real punishment for the crimes that he committed. I also see how this can work in the tip world as service can be determined by how much you want to wet the pockets in advance. Whether it is at your local deli or even gas station $$ speaks larger then words and there is always someone who will give you a bit better service for the extra Washington maybe Hamilton.
FOOTNOTE Yet as a person of morale character my tips are based on extra quality given not benefits that could be derived.