Demons Are Always Trouble.

The Mechanical Emperor announced solemnly, "I swear to do my best to ensure fairness and to ensure the protection of the young Supreme beasts participating in this rite of passage. And by the order of the Supreme Alliance, I announce the start of this rite of passage. I wish you all good luck." 

That announcement marked the start of the rite of passage. Some people choose to spend time looking at the map and plan where they will start out in the outer ring. After all, there is only one direction they can go in once they establish their base. So it is best to know the obstacles that they will encounter on their way to the center of the plane. They also have to look out for the opportunities that are available along their way to the center. 

While spending time to plan is good, some people are not doing so. They are already rushing out to pick a spot right now. The selection for slots, just like the selection for rewards, is first come first serve.