Maybe the rep forgot to also include it, as sometimes lots of activities at the same time make one skip some things they ought to do, and I believe that might likely be the scenario for the rep to have missed putting up that aspect of the requirement.

To the best of my knowledge, every organisation or promoter has its own strategy for marketing, and maybe they might deem this aspect of promotion very important because people would be interested in it to make a good profit, hence they coming up with this promo.