The €120 is gone either way. Neither day brings it back, so it settles nothing. Only one question survives, which of the two you would rather have. Arkes and Blumer put exactly this choice to sixty-one people in 1985, as a ski weekend. A little over half kept the trip that cost more and promised less (Arkes & Blumer, 1985).
Arkes, H. R., & Blumer, C. (1985). The Psychology of Sunk Cost. Organizational Behavior and Human Decision Processes, 35(1), 124-140.