According to the affective component of attitudes, these evaluations reflect the feelings of the employees. This is because this component of attitude revolves around the specific approach that an individual has towards someone or something, in regards to the feeling or emotion that the individual has when faced with that certain someone or something. Which in this case would be going on a trip to San Francisco.
Sing Happy Birthday and thank the parents for sharing the cupcakes, but respectfully decline and remind them of the BACB ethical code, which does not allow any giving or receiving of gifts of any kind.