Each island will have very different areas to explore based on the kind of terrain it is and different influences on how your team sets up camp, gets resources, and interacts. The Forbidden Island has ancient ruins on it that your team will live in, so there's no need for a shelter to be built. Margarita Island has plentiful food items, so using food bonuses to increase your minigame scores will become more strategic. The list goes on!
Here you can see that the Blue and Purple Team areas have access to sunken ships, which may prove to be an advantage (they could find special items on board) or a disadvantage (they could also uncover rotten coconuts or awaken pirate ghosts! Crap! ) if they choose to explore them.