I created my first cafeteria (working on the second star in the maritime museum) and it does not appear that the cafeteria food bonuses are working.  The three foods I chose are supposed to provide a +10% in buzz, increase energy, and increase entertainment.  However, none of those appear to be happening in any of the guests I've carefully followed from before cafeteria use to after.  I have screenshots of one guest as an example.  The only things that improve following the cafeteria visit are food, thirst, and happiness.  Buzz remained unchanged while energy and entertainment decreased slightly.