Okay, so I'm really close to completing a Treasure Map and sorta close to the Uncharted Land Map. Bit what I was wondering is what exactly do they do/give you? And is it worth it?

Treasure map- When completed will give you some random items/sp, fulfill one requirement for the BB and give you an achievement.

The uncharted map will grant you access to the island next to the fairgrounds, You'll be able to do a Merana quest for a Hydrus pet and the ability to use the OD vending machine.

Yes ReveL would be correct. If you're really into vending machines, the one on the island is my favorite :3

Omg, a new vending machine!! O.O Yes sooo worth it! Thank you ReveL and Zero. <3 Cool usernames too. :D