Final answer:
The barrier to consumer services marketer faces in this scenario is cultural barrier. The labor union's concern about the cultural differences in China regarding the acceptance of tips by wait-staff indicates that there may be a clash between the restaurant's current practices and the cultural norms in China.
Step-by-step explanation:
The barrier to consumer services marketer faces in this scenario is cultural barrier. The labor union's concern about the cultural differences in China regarding the acceptance of tips by wait-staff indicates that there may be a clash between the restaurant's current practices and the cultural norms in China. This cultural barrier may lead to a considerable loss for the restaurant if they do not find a suitable solution to compensate their employees without relying heavily on tips.