This is true, but the execs most likely know what the show is supposed to look like. And at THIS stage of the game, it is unlikely that they would present it to the executives if they didn't think it was going to meet expectations. You are right - things could go wrong, or someone high up could not be satisfied, but I simply don't think AT THIS STAGE OF THE GAME they would be bringing the execs in to watch a show that was working at 100%.