Usually if a survey result would affect financially, they will let you know before you fill out the survey. Years ago, we were on a cruise, and our dining servers told us if there is anything we don't like about the food or food service, please let them know immediately and they would fix it. If they receive less than full scores on the after cruise survey, it would affect their contracts renewal.
Similar thing happened at a car dealership long time ago. The sale person told me that if she did not get all 5 stars on the after survey (even with the questions about appearance of the dealership and such), she will get a reduction on the commission of the sale.