theamazingmiguelx:
1: No idea, can't help you there.
2: Phantom Shrimp meat, the reward is the most potent renewable healing item in the game... Not including stuff found in the Hidden Village.
3: As far as I know, they are in the game to be eaten to get an achievement.
4&5: You need to do the Alchemists sidequest and get the Mikan potion, give this to the insomniac, then you can do a mission for the bad postal service guy.
6: No.
7: That Area contains the best armor in the game.
8: I'm not entirely sure about those two.
9: I'm pretty sure it's just scenery.
EvilChicken529
I forgot to mention that this game is great since you put a lot of effort to it.