Sam and the group stayed in the tribe for the next few days. Sam's travel speed is different and he doesn't have to worry about anything.
He is confident that he could reach the island area within a few days and there is still ten days more for the island to appear.
He stayed here because he wanted to keep a close eye on the area. He wants to see if the cultivators from the three organizations would come.
That is one of the reasons, they came this early. No matter what, if those cultivators really decided to come here, even if they don't have any form of contact with the tribe, they would have to move through the same coast.
But after four days, there are no signs of someone. By this time, Sam already lost interest. It is about time he moved. There is around a week for the appearance of the island.