When Elvis is piloting the helicopter, interior shots show the woman and the dogs blocking his view and hampering the flight. In the same scene with the helicopter coming toward the camera, it's easy to see the pilot is alone.
At 53 minutes, during the House of Sand performance Elvis bumps into one of the dancers when he turns around.
When Rick, Lani, and Jan fly the helicopter over Waimea Canyon on Kauai and land on a beach to swim, the beach is actually on O'ahu not Kauai. The hat shaped island near the beach is Mokoli'i near Kaneohe Bay on O'ahu.