Charlie tells Kate that when they are eventually rescued, they'll all be famous. He's actually correct. The six survivors are called the Oceanic Six. Only Charlie is not one of them.
I want senses when Locke touches his arm that they are trying to open the hatch. He mysteriously warns Locke against doing so. We know Jacob and the Man in Black control the actions of various people on the island, dead or alive. Whether one of them is controlling Walt, giving him special insight, or something else is never quite clear. It's also not quite clear why either one of them would not want the survivors getting into the hatch at all.