When the first earthquake happens while Gilligan is playing Watubi, the shaking starts too early.
Ginger, who brought no clothes with her on the 3-hour tour, is now seen in different clothing yet again from what she wore on the tour. The second dress could have been made from materials from the boat. But here she is seen in a swimsuit top and a long skirt made from what looks like Hawaiian patterned material. There would have been nothing available to make an outfit like that.