What is the marriage hat and necklace on sims castaway wii?

both your sims need to be wearing the marriage hat and necklace for them to get married. You can get the plans for those two objects by swimming in the tidal pool. Go in the llama temple then you need to preform a cerimonial cliff dive. To open the llama doors you need all the hyros then stitch them together using a crafting bench.