"The two tribes would run out and push their tribal boats into the water. Paddling out to retrieve puzzle crates, they would have to dive down underwater to release the boxes. Once all crates were retrieved and brought back to shore, the tribes would stack the crates into a staircase with the name of this season 'Blood vs. Water' properly aligned along the sides. Then, two members of each tribe would solve a puzzle giving them the combination to retrieve the correct key. The first tribe to run to the top of the tower, unlock and pull a lever, releasing the tribe flag, would win the challenge." ~ @SurvivorWiki
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They receive coffee, tea, croissants, and biscotti for reward.
Proceed to tribe events.