Mountain hiking is a complicated matter. Experience shows that preparing for it is better to begin in advance. First of all you need to gather adherents and divide responsibilities.
Preparation for a hike in the mountains is a long and differently directed event and all members of the group should be involved in it. Comfort and safety in a mountain hike directly depends on good preparation.
It depends on how scrupulously and meticulous were studied and prepared different materials and questions, how group is ready technically and tactically, and morally - to the possible weather conditions in the mountains. And how well the psychological climate in the group was thought out and also how the quality of topographical maps you have found was good and how qualitatively and meticulous you worked with them.
That is why we can say that the quality of the hike is defined in the details.