When people set out for any type of event that requires planning, they tend not to want any surprises. This fundamental desire drives a lot of search traffic because it helps to determine what they search for and why they need to find it. Google itself notes that people have a "low tolerance for surprises" whether they're planning a dinner date or a month-long vacation. They seek to understand and plan as much as possible, so their search topics are going to be a pursuit of answers. That's why quality content matters so much, as it can be crafted specifically to answer those questions and give them additional insight into whatever it is they may be planning.