I've been having a look at the Hotel's website (I was curious that a hotel in my country offered "incentive" meeting rooms, you know). When I read the wording in Spanish, it still made litle sense, but I think that "incentive meetings" might refer to those meetings organized as a marketing strategy by certain brands/manufacturers where, after a speech, you are incentivated to purchase a product. The incentive being thst, since you are there, and have attended the speech, you get a discount for your patience. Such events are rather common in Spain, I don't know in other countries.
Student or Learner