We also did some guided tours and the last 10 minutes were reserved for the guide to explain how important the ratings are, how well we need to rate so that it is positive for her, and that her salary depends on positive ratings!
This did not feel good
This amount of spam in combination with the persistence and appeals to guilt really had a negative impact on the experience itself, because I could not just enjoy the service. I was asked to build myself an opinion and interact with the service provider again, instead of just enjoying and looking forward to the next event.
In some cases, I even rated the service just because I knew that I would be prompted to do so over and over again. In one case, I rated negatively and that was a mistake, too. They of course followed up on issue, which brought something I tried to forget to my consciousness again.