I doubt you have been to 5 islands, the 4 main islands people that people travel to are Oahu, Maui, Hawaii, and Kauai. You may have possibly went to Molokai or Lanai, but not likely. Yes Sandy's is on Oahu on the South shore. I used to love going there and body surfing when I was younger. Sadly a lot of tourists get injured on the beach for under estimating the power of the shore break there. You will be shocked when you see how much this place has changed!